[Epic-ID: ODUHIGH-516][Task-ID: ODUHIGH-528] RIC Subscription Failure
[o-du/l2.git] / src / ric_stub / ric_e2ap_msg_hdl.c
index ec6e0db..8cc3806 100644 (file)
 #include "RIC-EventTriggerStyle-Item.h"
 #include "RIC-ReportStyle-Item.h"
 #include "MeasurementInfo-Action-Item.h"
+#include "MeasurementInfoItem.h"
+#include "E2SM-KPM-ActionDefinition-Format1.h"
+#include "E2SM-KPM-ActionDefinition.h"
+#include "E2SM-KPM-EventTriggerDefinition-Format1.h"
+#include "E2SM-KPM-EventTriggerDefinition.h"
 
 
+/*******************************************************************
+ *
+ * @brief Assigns new transaction id to RIC initiated procedure
+ *
+ * @details
+ *
+ *    Function : assignTransactionId
+ *
+ *    Functionality: Assigns new transaction id to a RIC initiated
+ *       procedure
+ *
+ * @params[in] Region region
+ *             Pool pool
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ * ****************************************************************/
+
+uint8_t assignTransactionId(DuDb *duDb)
+{
+   uint8_t currTransId = duDb->ricTransIdCounter;
+
+   /* Update to next valid value */
+   duDb->ricTransIdCounter++;
+   if(duDb->ricTransIdCounter == MAX_NUM_TRANSACTION)
+      duDb->ricTransIdCounter = 0;
+
+   return currTransId;
+}
+
 /*******************************************************************
 *
 * @brief Sends E2 msg over SCTP
@@ -141,11 +176,11 @@ uint8_t BuildGlobalRicId(GlobalRIC_ID_t *ricId)
 void FreeE2SetupRsp(E2AP_PDU_t *e2apMsg)
 {
    uint8_t arrIdx = 0, e2NodeConfigIdx=0, ranFuncIdx=0;
-   RANfunctionsID_List_t *ranFuncAddedList;
-   E2setupResponse_t  *e2SetupRsp;
-   E2nodeComponentConfigAdditionAck_ItemIEs_t *e2NodeAddAckItemIe;
-   E2nodeComponentConfigAdditionAck_List_t *e2NodeConfigAdditionAckList;
-   E2nodeComponentInterfaceF1_t *f1InterfaceInfo;
+   RANfunctionsID_List_t *ranFuncAcceptedList=NULL;
+   E2setupResponse_t  *e2SetupRsp=NULL;
+   E2nodeComponentConfigAdditionAck_ItemIEs_t *e2NodeAddAckItemIe=NULL;
+   E2nodeComponentConfigAdditionAck_List_t *e2NodeConfigAdditionAckList=NULL;
+   E2nodeComponentInterfaceF1_t *f1InterfaceInfo=NULL;
    
    if(e2apMsg)
    {
@@ -160,17 +195,17 @@ void FreeE2SetupRsp(E2AP_PDU_t *e2apMsg)
                {
                   case ProtocolIE_IDE2_id_RANfunctionsAccepted:
                   {
-                     ranFuncAddedList= &e2SetupRsp->protocolIEs.list.array[arrIdx]->value.choice.RANfunctionsID_List;
-                     if(ranFuncAddedList->list.array)
+                     ranFuncAcceptedList= &e2SetupRsp->protocolIEs.list.array[arrIdx]->value.choice.RANfunctionsID_List;
+                     if(ranFuncAcceptedList->list.array)
                      {
-                        for(ranFuncIdx=0;ranFuncIdx<ranFuncAddedList->list.count; ranFuncIdx++)
+                        for(ranFuncIdx=0;ranFuncIdx<ranFuncAcceptedList->list.count; ranFuncIdx++)
                         {
-                           if(ranFuncAddedList->list.array[arrIdx])
+                           if(ranFuncAcceptedList->list.array[ranFuncIdx])
                            {
-                              RIC_FREE(ranFuncAddedList->list.array[arrIdx], sizeof(RANfunction_ItemIEs_t));
+                              RIC_FREE(ranFuncAcceptedList->list.array[ranFuncIdx], sizeof(RANfunction_ItemIEs_t));
                            }
                         }
-                        RIC_FREE(ranFuncAddedList->list.array, ranFuncAddedList->list.size);
+                        RIC_FREE(ranFuncAcceptedList->list.array, ranFuncAcceptedList->list.size);
                      }
                      break;
                   }
@@ -283,44 +318,73 @@ uint8_t BuildE2nodeComponentConfigAdditionAck(E2nodeComponentConfigAdditionAck_L
 
 /*******************************************************************
  *
- * @brief Build RAN function added list
+ * @brief Build RAN function accepted list
  *
  * @details
  *
- *    Function : BuildRanFunctionAddedList
+ *    Function : BuildRanFunctionAcceptedList
  *
- *    Functionality: Build RAN function added list 
+ *    Functionality: Build RAN function accepted list 
+ *     ->For ProcedureCodeE2_id_E2setup or ProcedureCodeE2_id_RICserviceQuery  
+ *     we add all the RAN Function list which is present in RIC database.
+ *     ->For any other procedures, we just fill the RAN functions whose ID 
+ *     is present in the recvList
  *
- * @params[in] DuDb *duDb, RANfunctionsID_List_t *ranFuncAddedList 
+ * @params[in] 
+ *    Stored DU databse 
+ *    Count of ran functions to be accepted in the list 
+ *    Received list of RAN functions
+ *    RAN Function list  
+ *    Procedure Code 
  *
  * @return ROK - success
  *         RFAILED - failure
  * ****************************************************************/
 
-uint8_t BuildRanFunctionAddedList(DuDb *duDb, RANfunctionsID_List_t *ranFuncAddedList)
+uint8_t BuildRanFunctionAcceptedList(DuDb *duDb, uint8_t count, RanFunction *ranFunAcceptedList, RANfunctionsID_List_t *ranFuncAcceptedList, uint8_t procedureCode)
 {
    uint8_t ranFuncIdx = 0;
-   RANfunctionID_ItemIEs_t *ranFuncAddedItemIe;
-
-   ranFuncAddedList->list.count = duDb->numOfRanFunction;
-   ranFuncAddedList->list.size = ranFuncAddedList->list.count*sizeof(RANfunctionID_ItemIEs_t*);
-   RIC_ALLOC(ranFuncAddedList->list.array, ranFuncAddedList->list.size);
-   if(ranFuncAddedList->list.array)
+   RANfunctionID_ItemIEs_t *ranFuncAcceptedItemIe=NULL;
+   
+   /* For ProcedureCodeE2_id_E2setup and ProcedureCodeE2_id_RICserviceQuery, 
+    * the number of RAN function list items is equal to the number of 
+    * ran function entries stored in the database.
+    * For any other procedure, the RAN function list count is equal
+    * to the count of ran functions obtained from the function's caller */
+
+   if((procedureCode == ProcedureCodeE2_id_RICserviceQuery)||(procedureCode == ProcedureCodeE2_id_E2setup))
+      ranFuncAcceptedList->list.count = duDb->numOfRanFunction;
+   else
+      ranFuncAcceptedList->list.count = count;
+   
+   ranFuncAcceptedList->list.size = ranFuncAcceptedList->list.count*sizeof(RANfunctionID_ItemIEs_t*);
+   RIC_ALLOC(ranFuncAcceptedList->list.array, ranFuncAcceptedList->list.size);
+   if(ranFuncAcceptedList->list.array)
    {
-      for(ranFuncIdx = 0; ranFuncIdx< ranFuncAddedList->list.count; ranFuncIdx++)
+      for(ranFuncIdx = 0; ranFuncIdx< ranFuncAcceptedList->list.count; ranFuncIdx++)
       {
-         RIC_ALLOC(ranFuncAddedList->list.array[ranFuncIdx], sizeof(RANfunction_ItemIEs_t));
-         if(ranFuncAddedList->list.array[ranFuncIdx] == NULLP)
+         RIC_ALLOC(ranFuncAcceptedList->list.array[ranFuncIdx], sizeof(RANfunction_ItemIEs_t));
+         if(ranFuncAcceptedList->list.array[ranFuncIdx] == NULLP)
          {
             DU_LOG("\nERROR  -->  E2AP : Memory allocation for RAN function added list array item");
             return RFAILED;
          }
-         ranFuncAddedItemIe = (RANfunctionID_ItemIEs_t*)ranFuncAddedList->list.array[ranFuncIdx];
-         ranFuncAddedItemIe->id = ProtocolIE_IDE2_id_RANfunctionID_Item;
-         ranFuncAddedItemIe->criticality= CriticalityE2_ignore;
-         ranFuncAddedItemIe->value.present = RANfunctionID_ItemIEs__value_PR_RANfunctionID_Item;
-         ranFuncAddedItemIe->value.choice.RANfunctionID_Item.ranFunctionID =duDb->ranFunction[ranFuncIdx].id;
-         ranFuncAddedItemIe->value.choice.RANfunctionID_Item.ranFunctionRevision=duDb->ranFunction[ranFuncIdx].revisionCounter;
+         ranFuncAcceptedItemIe = (RANfunctionID_ItemIEs_t*)ranFuncAcceptedList->list.array[ranFuncIdx];
+         ranFuncAcceptedItemIe->id = ProtocolIE_IDE2_id_RANfunctionID_Item;
+         ranFuncAcceptedItemIe->criticality= CriticalityE2_ignore;
+         ranFuncAcceptedItemIe->value.present = RANfunctionID_ItemIEs__value_PR_RANfunctionID_Item;
+         if((procedureCode == ProcedureCodeE2_id_RICserviceQuery)||(procedureCode == ProcedureCodeE2_id_E2setup))
+         {
+            /* filling the RAN function information with the help of DuDb */
+            ranFuncAcceptedItemIe->value.choice.RANfunctionID_Item.ranFunctionID = duDb->ranFunction[ranFuncIdx].id;
+            ranFuncAcceptedItemIe->value.choice.RANfunctionID_Item.ranFunctionRevision= duDb->ranFunction[ranFuncIdx].revisionCounter;
+         }
+         else
+         {
+            /* filling the the RAN function information with the help received list of RAN functions */
+            ranFuncAcceptedItemIe->value.choice.RANfunctionID_Item.ranFunctionID = ranFunAcceptedList[ranFuncIdx].id;
+            ranFuncAcceptedItemIe->value.choice.RANfunctionID_Item.ranFunctionRevision= ranFunAcceptedList[ranFuncIdx].revisionCounter;
+         }
       }
    }
    else
@@ -349,6 +413,7 @@ uint8_t BuildRanFunctionAddedList(DuDb *duDb, RANfunctionsID_List_t *ranFuncAdde
  *         RFAILED - failure
  *
  * ****************************************************************/
+
 uint8_t BuildAndSendE2SetupRsp(DuDb *duDb, uint8_t transId)
 {
    E2AP_PDU_t         *e2apMsg = NULL;
@@ -381,7 +446,11 @@ uint8_t BuildAndSendE2SetupRsp(DuDb *duDb, uint8_t transId)
                                                          SuccessfulOutcomeE2__value_PR_E2setupResponse;
       e2SetupRsp = &e2apMsg->choice.successfulOutcome->value.choice.E2setupResponse;
 
-      elementCnt = 4;
+      elementCnt = 3;
+      /* Fill Accepted RAN function IE If Ran function information is stored in databse */
+      if(duDb->numOfRanFunction)
+         elementCnt++;
+
       e2SetupRsp->protocolIEs.list.count = elementCnt;
       e2SetupRsp->protocolIEs.list.size  = elementCnt * sizeof(E2setupResponseIEs_t*);
 
@@ -419,8 +488,7 @@ uint8_t BuildAndSendE2SetupRsp(DuDb *duDb, uint8_t transId)
       idx++;
       e2SetupRsp->protocolIEs.list.array[idx]->id = ProtocolIE_IDE2_id_GlobalRIC_ID;
       e2SetupRsp->protocolIEs.list.array[idx]->criticality = CriticalityE2_reject;
-      e2SetupRsp->protocolIEs.list.array[idx]->value.present = \
-                                                               E2setupResponseIEs__value_PR_GlobalRIC_ID;
+      e2SetupRsp->protocolIEs.list.array[idx]->value.present = E2setupResponseIEs__value_PR_GlobalRIC_ID;
 
       if(BuildGlobalRicId(&(e2SetupRsp->protocolIEs.list.array[idx]->value.choice.GlobalRIC_ID))!=ROK)
       {
@@ -428,15 +496,18 @@ uint8_t BuildAndSendE2SetupRsp(DuDb *duDb, uint8_t transId)
          break;
       }
       
-      /* Accepted RAN function Id */
-      idx++;
-      e2SetupRsp->protocolIEs.list.array[idx]->id = ProtocolIE_IDE2_id_RANfunctionsAccepted;
-      e2SetupRsp->protocolIEs.list.array[idx]->criticality = CriticalityE2_reject;
-      e2SetupRsp->protocolIEs.list.array[idx]->value.present = E2setupResponseIEs__value_PR_RANfunctionsID_List;
-      if(BuildRanFunctionAddedList(duDb, &e2SetupRsp->protocolIEs.list.array[idx]->value.choice.RANfunctionsID_List)!=ROK)
+      if(duDb->numOfRanFunction)
       {
-         DU_LOG("\nERROR  -->  E2AP : Failed to build Ran function added list");
-         break;         
+         /* Accepted RAN function Id */
+         idx++;
+         e2SetupRsp->protocolIEs.list.array[idx]->id = ProtocolIE_IDE2_id_RANfunctionsAccepted;
+         e2SetupRsp->protocolIEs.list.array[idx]->criticality = CriticalityE2_reject;
+         e2SetupRsp->protocolIEs.list.array[idx]->value.present = E2setupResponseIEs__value_PR_RANfunctionsID_List;
+         if(BuildRanFunctionAcceptedList(duDb, 0, NULL, &e2SetupRsp->protocolIEs.list.array[idx]->value.choice.RANfunctionsID_List, ProcedureCodeE2_id_E2setup)!=ROK)
+         {
+            DU_LOG("\nERROR  -->  E2AP : Failed to build Ran function added list");
+            break;         
+         }
       }
 
       /* E2 Node Component Configuration Addition Acknowledge List*/
@@ -444,8 +515,9 @@ uint8_t BuildAndSendE2SetupRsp(DuDb *duDb, uint8_t transId)
       e2SetupRsp->protocolIEs.list.array[idx]->id = ProtocolIE_IDE2_id_E2nodeComponentConfigAdditionAck;
       e2SetupRsp->protocolIEs.list.array[idx]->criticality = CriticalityE2_reject;
       e2SetupRsp->protocolIEs.list.array[idx]->value.present = \
-      E2setupResponseIEs__value_PR_E2nodeComponentConfigAdditionAck_List;
-      if(BuildE2nodeComponentConfigAdditionAck(&e2SetupRsp->protocolIEs.list.array[idx]->value.choice.E2nodeComponentConfigAdditionAck_List, duDb)!=ROK)
+         E2setupResponseIEs__value_PR_E2nodeComponentConfigAdditionAck_List;
+      if(BuildE2nodeComponentConfigAdditionAck(&e2SetupRsp->protocolIEs.list.array[idx]->\
+         value.choice.E2nodeComponentConfigAdditionAck_List, duDb) != ROK)
       {
          DU_LOG("\nERROR  -->  E2AP : Failed to build E2Node Component config addition ack list");
          break;
@@ -481,372 +553,776 @@ uint8_t BuildAndSendE2SetupRsp(DuDb *duDb, uint8_t transId)
    }
 
    FreeE2SetupRsp(e2apMsg);
-   BuildAndSendRicSubscriptionReq(duDb->duId);
+   BuildAndSendRicSubscriptionReq(duDb);
    return ROK;
 }
 
 /*******************************************************************
  *
- * @brief Builds Ric Request Id
+ * @brief Free RIC Subscription Details
  *
  * @details
  *
- *    Function : BuildRicRequestId
+ *    Function : FreeRicSubsDetails
  *
- *    Functionality: Building the Ric Request Id
+ *    Functionality: Free the RIC Subscription Details
  *
- * @params[in] RICrequestID_t *ricReqId
- * @return ROK     - success
- *         RFAILED - failure
+ * @params[in] RICsubscriptionDetails_t *subsDetails
+ * @return void
  *
  * ****************************************************************/
-
-uint8_t BuildRicRequestId(RICrequestID_t *ricReqId)
+void FreeRicSubsDetails(RICsubscriptionDetails_t *subsDetails)
 {
+   uint8_t elementIdx = 0;
+   RICaction_ToBeSetup_ItemIEs_t *actionItem = NULLP;
 
-   if(ricReqId != NULLP)
+   RIC_FREE(subsDetails->ricEventTriggerDefinition.buf, subsDetails->ricEventTriggerDefinition.size);
+
+   if(subsDetails->ricAction_ToBeSetup_List.list.array)
    {
-      ricReqId->ricRequestorID = 1;
-      ricReqId->ricInstanceID  = 1;
+      for(elementIdx = 0; elementIdx < subsDetails->ricAction_ToBeSetup_List.list.count; elementIdx++)
+      {
+         if(subsDetails->ricAction_ToBeSetup_List.list.array[elementIdx])
+         {
+            actionItem = (RICaction_ToBeSetup_ItemIEs_t *)subsDetails->ricAction_ToBeSetup_List.list.array[elementIdx];
+            if(actionItem->value.choice.RICaction_ToBeSetup_Item.ricActionDefinition)
+            {
+               RIC_FREE(actionItem->value.choice.RICaction_ToBeSetup_Item.ricActionDefinition->buf, \
+                  actionItem->value.choice.RICaction_ToBeSetup_Item.ricActionDefinition->size);
+               RIC_FREE(actionItem->value.choice.RICaction_ToBeSetup_Item.ricActionDefinition, sizeof(RICactionDefinition_t));
+            }
+            RIC_FREE(subsDetails->ricAction_ToBeSetup_List.list.array[elementIdx], sizeof(RICaction_ToBeSetup_ItemIEs_t))
+         }
+      }
+      RIC_FREE(subsDetails->ricAction_ToBeSetup_List.list.array, subsDetails->ricAction_ToBeSetup_List.list.size);
    }
-   return ROK;
 }
 
 /*******************************************************************
  *
- * @brief Fills Ric Action To be Setup Item
+ * @brief Free RIC Subscription Request
  *
  * @details
  *
- *    Function : fillSetupItems
+ *    Function : FreeRicSubscriptionReq
  *
- *    Functionality: Filling ricAction Id, RicActionType
+ * Functionality : Free RIC Subscription Request
  *
- * @params[in] RICaction_ToBeSetup_Item_t *setupItems
- * @return pointer of type RICaction_ToBeSetup_Item_t
+ * @return ROK     - success
+ *         RFAILED - failure
  *
- * ****************************************************************/
-
-RICaction_ToBeSetup_Item_t* fillSetupItems(RICaction_ToBeSetup_Item_t *setupItems)
+ ******************************************************************/
+void FreeRicSubscriptionReq(E2AP_PDU_t *e2apRicMsg)
 {
-   if(setupItems != NULLP)
+   uint8_t idx = 0;
+   RICsubscriptionRequest_t   *ricSubscriptionReq;
+
+   if(e2apRicMsg)
    {
-      setupItems->ricActionID = 0;
-      setupItems->ricActionType = RICactionType_report;
+      if(e2apRicMsg->choice.initiatingMessage)
+      {
+         ricSubscriptionReq = &e2apRicMsg->choice.initiatingMessage->value.choice.RICsubscriptionRequest;
+         if(ricSubscriptionReq->protocolIEs.list.array)
+         {
+            for(idx=0; idx < ricSubscriptionReq->protocolIEs.list.count; idx++)
+            {
+               switch(ricSubscriptionReq->protocolIEs.list.array[idx]->id)
+               {
+                  case ProtocolIE_IDE2_id_RICsubscriptionDetails:
+                     {
+                        FreeRicSubsDetails(&(ricSubscriptionReq->protocolIEs.list.array[idx]->value.choice.RICsubscriptionDetails));
+                        break;
+                     }
+               }               
+               RIC_FREE(ricSubscriptionReq->protocolIEs.list.array[idx], sizeof(RICsubscriptionRequest_IEs_t));
+            }
+            RIC_FREE(ricSubscriptionReq->protocolIEs.list.array, ricSubscriptionReq->protocolIEs.list.size);
+         }
+         RIC_FREE(e2apRicMsg->choice.initiatingMessage, sizeof(InitiatingMessageE2_t));
+      }
+      RIC_FREE(e2apRicMsg, sizeof(E2AP_PDU_t));
    }
-
-   return (setupItems);
 }
 
 /*******************************************************************
  *
- * @brief Fills RIC Subscription Details Item List
+ * @brief Builds Ric Request Id
  *
  * @details
  *
- *    Function : fillSubsDetails
+ *    Function : BuildNewRicRequestId
  *
- *    Functionality: Fill the RIC Subscription Details Items List
+ *    Functionality: Assign new Ric Request ID
  *
- * @params[in] RICaction_ToBeSetup_ItemIEs_t *items
+ * @params[in] RIC request ID to be sent
+ *             RIC request ID stored in DB
  * @return ROK     - success
  *         RFAILED - failure
  *
  * ****************************************************************/
 
-uint8_t fillSubsDetails(RICaction_ToBeSetup_ItemIEs_t *items)
+uint8_t BuildNewRicRequestId(RICrequestID_t *ricReqId, RicRequestId *reqIdDb)
 {
-   if(items != NULLP)
+   static uint16_t requestorId = 0;
+   static uint16_t instanceId = 0;
+
+   if(ricReqId != NULLP)
    {
-      items->id = ProtocolIE_IDE2_id_RICaction_ToBeSetup_Item;
-      items->criticality   =  CriticalityE2_ignore;
-      items->value.present =  RICaction_ToBeSetup_ItemIEs__value_PR_RICaction_ToBeSetup_Item;
-      fillSetupItems(&(items->value.choice.RICaction_ToBeSetup_Item));
+      ricReqId->ricRequestorID = ++requestorId;
+      ricReqId->ricInstanceID  = ++instanceId;
+
+      reqIdDb->requestorId = ricReqId->ricRequestorID;
+      reqIdDb->instanceId = ricReqId->ricInstanceID;
    }
    return ROK;
 }
 
 /*******************************************************************
  *
- * @brief builds RIC Subscription Details
+ * @brief Free RIC Action Definition
  *
  * @details
  *
- *    Function : BuildsRicSubsDetails
+ *    Function : FreeRicActionDefinition
  *
- *    Functionality: Builds the RIC Subscription Details
+ *    Functionality: Free RIC Action Definition
  *
- * @params[in] RICsubscriptionDetails_t *subsDetails
- * @return ROK     - success
- *         RFAILED - failure
+ * @params[in] E2SM-KPM Action definition
+ * @return void
  *
  * ****************************************************************/
-
-uint8_t BuildRicSubsDetails(RICsubscriptionDetails_t *subsDetails)
+void  FreeRicActionDefinition(E2SM_KPM_ActionDefinition_t actionDef)
 {
+   uint8_t  elementIdx = 0;
+   E2SM_KPM_ActionDefinition_Format1_t *actionFormat1 = NULLP;
+   MeasurementInfoItem_t *measItem = NULLP;
 
-   uint8_t elementCnt;
-
-   if(subsDetails != NULLP)
+   switch(actionDef.actionDefinition_formats.present)
    {
-      /* Octet string to be build here */
-      /* Sending PLMN as Octect string */
-      uint8_t byteSize = 3;
-      subsDetails->ricEventTriggerDefinition.size = byteSize * sizeof(uint8_t);
-      RIC_ALLOC(subsDetails->ricEventTriggerDefinition.buf,  subsDetails->ricEventTriggerDefinition.size);
-      buildPlmnId(ricCb.ricCfgParams.plmn, subsDetails->ricEventTriggerDefinition.buf);
-      elementCnt = 1;
-      subsDetails->ricAction_ToBeSetup_List.list.count = elementCnt;
-      subsDetails->ricAction_ToBeSetup_List.list.size = \
-                      elementCnt * sizeof(RICaction_ToBeSetup_ItemIEs_t);
-      RIC_ALLOC(subsDetails->ricAction_ToBeSetup_List.list.array, \
-                subsDetails->ricAction_ToBeSetup_List.list.size);
-      if(subsDetails->ricAction_ToBeSetup_List.list.array  == NULLP)
-      {
-         DU_LOG("\nERROR  -->  E2AP : Memory allocation for RICactionToBeSetup Items failed");
-         return RFAILED;
-      } 
-      RIC_ALLOC(subsDetails->ricAction_ToBeSetup_List.list.array[0],\
-                   sizeof(RICaction_ToBeSetup_ItemIEs_t));
-      fillSubsDetails(subsDetails->ricAction_ToBeSetup_List.list.array[0]);
+      case E2SM_KPM_ActionDefinition__actionDefinition_formats_PR_actionDefinition_Format1:
+         {
+            if(actionDef.actionDefinition_formats.choice.actionDefinition_Format1)
+            {
+               actionFormat1 = actionDef.actionDefinition_formats.choice.actionDefinition_Format1;
+               if(actionFormat1->measInfoList.list.array)
+               {
+                  for(elementIdx = 0; elementIdx < actionFormat1->measInfoList.list.count; elementIdx++)
+                  {
+                     if(actionFormat1->measInfoList.list.array[elementIdx])
+                     {
+                        measItem = actionFormat1->measInfoList.list.array[elementIdx];
+                        switch(measItem->measType.present)
+                        {
+                           case MeasurementType_PR_NOTHING:
+                           case MeasurementType_PR_measID:
+                              break;
+                           case MeasurementType_PR_measName:
+                           {
+                              RIC_FREE(measItem->measType.choice.measName.buf, measItem->measType.choice.measName.size)
+                              break;
+                           }
+                        }
+                        RIC_FREE(measItem, sizeof(MeasurementInfoItem_t));
+                     }
+                  }
+                  RIC_FREE(actionFormat1->measInfoList.list.array, actionFormat1->measInfoList.list.size);
+               }
+               RIC_FREE(actionFormat1, sizeof(E2SM_KPM_ActionDefinition_Format1_t));
+            }
+            break;
+         }
+
+      case E2SM_KPM_ActionDefinition__actionDefinition_formats_PR_actionDefinition_Format2:
+      case E2SM_KPM_ActionDefinition__actionDefinition_formats_PR_actionDefinition_Format3:
+      case E2SM_KPM_ActionDefinition__actionDefinition_formats_PR_actionDefinition_Format4:
+      case E2SM_KPM_ActionDefinition__actionDefinition_formats_PR_actionDefinition_Format5:
+      case E2SM_KPM_ActionDefinition__actionDefinition_formats_PR_NOTHING:
+         break;
    }
-   return ROK;
 }
 
 /*******************************************************************
  *
- * @brief Builds and Send the RicSubscriptionReq
+ * @brief Fill RIC Action Definition
  *
  * @details
  *
- *    Function : BuildAndSendRicSubscriptionReq
+ *    Function : fillRicActionDef
  *
- * Functionality:Fills the RicSubscriptionReq
+ *    Functionality: Fill RIC Action Definition
  *
- * @return ROK     - success
- *         RFAILED - failure
+ * @params[in] RIC Action definition
+ * @return ROK 
+ *         RFAILED
  *
- ******************************************************************/
-
-uint8_t BuildAndSendRicSubscriptionReq(uint32_t duId)
+ * ****************************************************************/
+uint8_t fillRicActionDef(RICactionDefinition_t *ricActionDef)
 {
+   uint8_t ret = RFAILED;
+   asn_enc_rval_t  encRetVal;
+   uint8_t elementCnt = 0, elementIdx = 0;
+   char    *measurementTypeName[] = {"RRU.PrbTotDl", "RRU.PrbTotUl"};
+   E2SM_KPM_ActionDefinition_t actionDef;
+   E2SM_KPM_ActionDefinition_Format1_t *actionFormat1 = NULLP;
+   MeasurementInfoItem_t *measItem = NULLP;
+   
+   while(true)
+   {
+      /* Fill E2SM-KPM Action Definition Format 1 */
 
-   E2AP_PDU_t                 *e2apRicMsg = NULL;
-   RICsubscriptionRequest_t   *ricSubscriptionReq;
-   uint8_t         elementCnt;
-   uint8_t         idx;
-   uint8_t         ieId;
-   uint8_t         ret; 
-   asn_enc_rval_t  encRetVal;        /* Encoder return value */
+      /* RIC Stype Type */
+      actionDef.ric_Style_Type = RIC_STYLE_TYPE;
 
-   DU_LOG("\nINFO   -->  E2AP : Building RIC Subscription Request\n");
+      /* RIC Action Definition Format 1 */
+      actionDef.actionDefinition_formats.present = \
+           E2SM_KPM_ActionDefinition__actionDefinition_formats_PR_actionDefinition_Format1;
 
-   RIC_ALLOC(e2apRicMsg, sizeof(E2AP_PDU_t));
-   if(e2apRicMsg == NULLP)
-   {
-      DU_LOG("\nERROR  -->  E2AP : Memory allocation for E2AP-PDU failed");
-      return RFAILED;
-   }
+      RIC_ALLOC(actionDef.actionDefinition_formats.choice.actionDefinition_Format1, \
+            sizeof(E2SM_KPM_ActionDefinition_Format1_t));
+      if(actionDef.actionDefinition_formats.choice.actionDefinition_Format1 == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed at [%s] : line [%d]", __func__, __LINE__);
+         break;
+      }
+      actionFormat1 = actionDef.actionDefinition_formats.choice.actionDefinition_Format1;
+
+      /* Measurement Info List */
+      elementCnt = 2;
+      actionFormat1->measInfoList.list.count = elementCnt;
+      actionFormat1->measInfoList.list.size = elementCnt * sizeof(MeasurementInfoItem_t *);
+      RIC_ALLOC(actionFormat1->measInfoList.list.array, actionFormat1->measInfoList.list.size);
+      if(actionFormat1->measInfoList.list.array == NULL)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed at [%s] : line [%d]", __func__, __LINE__);
+         break;
+      }
 
-   e2apRicMsg->present = E2AP_PDU_PR_initiatingMessage;
-   RIC_ALLOC(e2apRicMsg->choice.initiatingMessage, sizeof(InitiatingMessageE2_t));
-   if(e2apRicMsg->choice.initiatingMessage == NULLP)
-   {
-      DU_LOG("\nERROR  -->  E2AP : Memory allocation for E2AP-PDU failed");
-      RIC_FREE(e2apRicMsg, sizeof(E2AP_PDU_t));
-      return RFAILED;
-   }
-   e2apRicMsg->choice.initiatingMessage->procedureCode = ProcedureCodeE2_id_RICsubscription;
-   e2apRicMsg->choice.initiatingMessage->criticality = CriticalityE2_reject;
-   e2apRicMsg->choice.initiatingMessage->value.present = InitiatingMessageE2__value_PR_RICsubscriptionRequest;
-   
-   RIC_ALLOC(ricSubscriptionReq, sizeof(RICsubscriptionRequest_t));
-   ricSubscriptionReq = &e2apRicMsg->choice.initiatingMessage->value.choice.RICsubscriptionRequest;
-   
-   elementCnt = 3;
-   ricSubscriptionReq->protocolIEs.list.count = elementCnt;
-   ricSubscriptionReq->protocolIEs.list.size  = elementCnt * sizeof(RICsubscriptionRequest_IEs_t);
-
-   /* Initialize the subscription members */
-   RIC_ALLOC(ricSubscriptionReq->protocolIEs.list.array, \
-              ricSubscriptionReq->protocolIEs.list.size);
-   if(ricSubscriptionReq->protocolIEs.list.array == NULLP)
-   {
-      DU_LOG("\nERROR  -->  E2AP : Memory allocation for RICSubscriptionRequestIEs failed");
-      RIC_FREE(e2apRicMsg->choice.initiatingMessage, sizeof(InitiatingMessageE2_t));
-      RIC_FREE(e2apRicMsg, (Size)sizeof(E2AP_PDU_t));
-      return RFAILED;
-   }
-   
-   for(idx=0; idx<elementCnt; idx++)
-   {
-      RIC_ALLOC(ricSubscriptionReq->protocolIEs.list.array[idx],\
-            sizeof(RICsubscriptionRequest_IEs_t));
-      if(ricSubscriptionReq->protocolIEs.list.array[idx] == NULLP)
+      for(elementIdx = 0; elementIdx < elementCnt; elementIdx++)
       {
-         for(ieId=0; ieId<idx; ieId++)
+         RIC_ALLOC(actionFormat1->measInfoList.list.array[elementIdx], sizeof(MeasurementInfoItem_t));
+         if(actionFormat1->measInfoList.list.array[elementIdx] == NULLP)
          {
-            RIC_FREE(ricSubscriptionReq->protocolIEs.list.array[ieId],\
-                  sizeof(RICsubscriptionRequest_IEs_t));
+            DU_LOG("\nERROR  -->  E2AP : Memory allocation failed at [%s] : line [%d]", __func__, __LINE__);
+            break;
          }
-         RIC_FREE(ricSubscriptionReq->protocolIEs.list.array,\
-                  ricSubscriptionReq->protocolIEs.list.size);
-         RIC_FREE(e2apRicMsg->choice.initiatingMessage, \
-               sizeof(InitiatingMessageE2_t));
-         RIC_FREE(e2apRicMsg, sizeof(E2AP_PDU_t));
-         return RFAILED;
-      }
-   }
-
-   /* Filling RIC Request Id */
-   idx = 0;
-   ricSubscriptionReq->protocolIEs.list.array[idx]->id = ProtocolIE_IDE2_id_RICrequestID;
-   ricSubscriptionReq->protocolIEs.list.array[idx]->criticality = CriticalityE2_reject;
-   ricSubscriptionReq->protocolIEs.list.array[idx]->value.present =\
-                                    RICsubscriptionRequest_IEs__value_PR_RICrequestID;
-   BuildRicRequestId(&ricSubscriptionReq->protocolIEs.list.array[idx]->value.choice.RICrequestID);
 
+         measItem = actionFormat1->measInfoList.list.array[elementIdx];
+         measItem->measType.present = MeasurementType_PR_measName;
 
-   /* Filling RAN Function Id */
-   idx++;
-   ricSubscriptionReq->protocolIEs.list.array[idx]->id = ProtocolIE_IDE2_id_RANfunctionID;
-   ricSubscriptionReq->protocolIEs.list.array[idx]->criticality = CriticalityE2_reject;
-   ricSubscriptionReq->protocolIEs.list.array[idx]->value.present =\
-                                    RICsubscriptionRequest_IEs__value_PR_RANfunctionID;
-   ricSubscriptionReq->protocolIEs.list.array[idx]->value.choice.RANfunctionID = 1;
-
-
-   /* Filling RIC Subscription Details */
-   idx++;
-   ricSubscriptionReq->protocolIEs.list.array[idx]->id = ProtocolIE_IDE2_id_RICsubscriptionDetails;
-   ricSubscriptionReq->protocolIEs.list.array[idx]->criticality = CriticalityE2_reject;
-   ricSubscriptionReq->protocolIEs.list.array[idx]->value.present =\
-                                    RICsubscriptionRequest_IEs__value_PR_RICsubscriptionDetails;
-
-   BuildRicSubsDetails(&(ricSubscriptionReq->protocolIEs.list.array[idx]->value.choice.RICsubscriptionDetails));
+         measItem->measType.choice.measName.size = strlen(measurementTypeName[elementIdx]);
+         RIC_ALLOC(measItem->measType.choice.measName.buf, measItem->measType.choice.measName.size);
+         if(measItem->measType.choice.measName.buf == NULLP)
+         {
+            DU_LOG("\nERROR  -->  E2AP : Memory allocation failed at [%s] : line [%d]", __func__, __LINE__);
+            break;
+         }
+         memcpy(measItem->measType.choice.measName.buf, measurementTypeName[elementIdx], measItem->measType.choice.measName.size);
+      }
+      if(elementIdx < elementCnt)
+         break;
 
+      /* Granularity Period */
+      actionFormat1->granulPeriod = RIC_ACTION_GRANULARITY_PERIOD; /* In ms */
 
-   /* Prints the Msg formed */
-   xer_fprint(stdout, &asn_DEF_E2AP_PDU, e2apRicMsg);
+      /* Prints the Msg formed */
+      xer_fprint(stdout, &asn_DEF_E2SM_KPM_ActionDefinition, &actionDef);
 
-   memset(encBuf, 0, ENC_BUF_MAX_LEN);
-   encBufSize = 0;
-   encRetVal = aper_encode(&asn_DEF_E2AP_PDU, 0, e2apRicMsg, PrepFinalEncBuf,\
-               encBuf);
-   if(encRetVal.encoded == ENCODE_FAIL)
-   {
-      DU_LOG("\nERROR  -->  E2AP : Could not encode RicSubscriptionRequest structure (at %s)\n",\
-      encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
-      return RFAILED;
-   }
-   else
-   {
-      DU_LOG("\nDEBUG  -->  E2AP : Created APER encoded buffer for RicSubscriptionRequest\n");
-      for(int i=0; i< encBufSize; i++)
+      /* Encode E2SM-KPM RIC Action Definition */
+      memset(encBuf, 0, ENC_BUF_MAX_LEN);
+      encBufSize = 0;
+      encRetVal = aper_encode(&asn_DEF_E2SM_KPM_ActionDefinition, 0, &actionDef, PrepFinalEncBuf, encBuf);
+      if(encRetVal.encoded == ENCODE_FAIL)
       {
-          DU_LOG("%x",encBuf[i]);
-      } 
-   }
+         DU_LOG("\nERROR  -->  E2AP : Could not encode E2SM-KPM action definition structure (at %s)\n",\
+               encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
+         break;
+      }
 
+      /* Copty encoded E2SM-KPM RIC action definition to E2AP octet string buffer */
+      ricActionDef->size = encBufSize;
+      RIC_ALLOC(ricActionDef->buf, encBufSize);
+      if(ricActionDef->buf == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed at [%s] : line [%d]", __func__, __LINE__);
+         break;
+      }
+      memcpy(ricActionDef->buf, encBuf, encBufSize);
 
-   /* Sending msg */
-   if(SendE2APMsg(RIC_APP_MEM_REG, RIC_POOL, duId) != ROK)
-   {
-      DU_LOG("\nERROR  -->  E2AP : Sending RIC subscription Request failed");
-      return RFAILED;
+      ret = ROK;
+      break;
    }
 
-   return ROK;
+   FreeRicActionDefinition(actionDef);
+   return ret;
 }
 
 /*******************************************************************
  *
- * @brief Process RicSubscriptionResponse
+ * @brief Fills RIC Action To Be Setup Item
  *
  * @details
  *
- *    Function : ProcRicSubscriptionRsp
+ *    Function : fillActionToBeSetup
  *
- * Functionality: Processes RicSubscriptionRsp
+ *    Functionality: Fill the RIC Action To Be Setup Ite,
+ *                   RIC subscription DB
  *
- * @return ROK     - void
+ * @params[in] RICaction_ToBeSetup_ItemIEs_t *items
+ * @return ROK     - success
+ *         RFAILED - failure
  *
- ******************************************************************/
-
-void ProcRicSubscriptionResponse(uint32_t duId)
+ * ****************************************************************/
+uint8_t fillActionToBeSetup(RICaction_ToBeSetup_ItemIEs_t *actionItem, RicSubscription *ricSubsDb)
 {
-   uint8_t duIdx = 0;
-   DuDb *duDb;
+   static uint8_t ricActionId = 0;
 
-   DU_LOG("\nINFO  -->  E2AP : RICsubscriptionResponse Msg Acknowledged");
+   if(actionItem == NULLP)
+   {
+      DU_LOG("\nERROR  -->  E2AP : Failed at [%s] : line [%d]", __func__, __LINE__);
+      return RFAILED;
+   }
 
-   SEARCH_DU_DB(duIdx, duId, duDb);
-   if(duDb)
-      duDb->ricSubscribedToDu = true;
+   while(true)
+   {
+      actionItem->id = ProtocolIE_IDE2_id_RICaction_ToBeSetup_Item;
+      actionItem->criticality   =  CriticalityE2_ignore;
+      actionItem->value.present =  RICaction_ToBeSetup_ItemIEs__value_PR_RICaction_ToBeSetup_Item;
+      
+      /* RIC Action ID */
+      actionItem->value.choice.RICaction_ToBeSetup_Item.ricActionID = ++ricActionId;
+      ricSubsDb->actionSequence[ricSubsDb->numOfActions].id = \
+         actionItem->value.choice.RICaction_ToBeSetup_Item.ricActionID;
+
+      /* RIC Action Type */
+      actionItem->value.choice.RICaction_ToBeSetup_Item.ricActionType = RICactionType_report;
+
+      /* RIC Action Definition */
+      RIC_ALLOC(actionItem->value.choice.RICaction_ToBeSetup_Item.ricActionDefinition, sizeof(RICactionDefinition_t));
+      if(!actionItem->value.choice.RICaction_ToBeSetup_Item.ricActionDefinition)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed at [%s] : line [%d]", __func__, __LINE__);
+         break;
+      }
+      if(fillRicActionDef(actionItem->value.choice.RICaction_ToBeSetup_Item.ricActionDefinition) != ROK)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Failed at [%s] : line [%d]", __func__, __LINE__);
+         break;
+      }
+      
+      ricSubsDb->numOfActions++;
+      return ROK;
+   }
+
+   memset(&ricSubsDb->actionSequence[ricSubsDb->numOfActions], 0, sizeof(ActionInfo));
+   return RFAILED;
 }
 
 /*******************************************************************
  *
- * @brief deallocate the memory allocated in E2SetupFailure
+ * @brief Free Event Trigger Definition
  *
  * @details
  *
- *    Function : FreeE2SetupFailure 
- *
- *    Functionality: deallocate the memory allocated in E2SetupFailure 
+ *    Function : FreeEventTriggerDef
  *
- * @params[in] E2AP_PDU_t *e2apMsg
+ *    Functionality: Free Event Trigger Definition
  *
+ * @params[in] E2SM-KPM Event Trigger Definition
  * @return void
+ *
  * ****************************************************************/
-void FreeE2SetupFailure(E2AP_PDU_t *e2apMsg)
+void  FreeEventTriggerDef(E2SM_KPM_EventTriggerDefinition_t *eventTiggerDef)
 {
-   uint8_t arrIdx = 0;
-   E2setupFailure_t  *e2SetupFail;
-
-   if(e2apMsg)
+   if(eventTiggerDef)
    {
-      if(e2apMsg->choice.unsuccessfulOutcome)
+      switch(eventTiggerDef->eventDefinition_formats.present)
       {
-         e2SetupFail = &e2apMsg->choice.unsuccessfulOutcome->value.choice.E2setupFailure;
-         if(e2SetupFail->protocolIEs.list.array)
-         {
-            for(arrIdx=0; arrIdx<e2SetupFail->protocolIEs.list.count; arrIdx++)
-            {
-               RIC_FREE(e2SetupFail->protocolIEs.list.array[arrIdx], sizeof(E2setupFailureIEs_t)); 
-            }
-            RIC_FREE(e2SetupFail->protocolIEs.list.array, e2SetupFail->protocolIEs.list.size);
-         }
-         RIC_FREE(e2apMsg->choice.unsuccessfulOutcome, sizeof(UnsuccessfulOutcomeE2_t));
-      }
-      RIC_FREE(e2apMsg, sizeof(E2AP_PDU_t));
+         case E2SM_KPM_EventTriggerDefinition__eventDefinition_formats_PR_NOTHING:
+            break;
+         case E2SM_KPM_EventTriggerDefinition__eventDefinition_formats_PR_eventDefinition_Format1: 
+            RIC_FREE(eventTiggerDef->eventDefinition_formats.choice.eventDefinition_Format1, \
+                  sizeof(E2SM_KPM_EventTriggerDefinition_Format1_t));
+            break;                  
+      }         
    }
 }
 
 /*******************************************************************
  *
- * @brief Buld and send the E2 Setup failure
+ * @brief Fill Event Trigger Definition
  *
  * @details
  *
- *    Function : BuildAndSendE2SetupFailure
+ *    Function : fillEventTriggerDef
  *
- *    Functionality:
- *         - Buld and send the E2 Setup failure
- * @return ROK     - success
- *         RFAILED - failure
+ *    Functionality: Fill Event Trigger Definition
+ *
+ * @params[in] RIC Event Trigger Definition
+ * @return ROK
+ *         RFAILED
  *
  * ****************************************************************/
-
-uint8_t BuildAndSendE2SetupFailure(uint32_t duId, uint8_t transId)
+uint8_t fillEventTriggerDef(RICeventTriggerDefinition_t *ricEventTriggerDef)
 {
-   E2AP_PDU_t         *e2apMsg = NULL;
-   E2setupFailure_t   *e2SetupFailure;
-   asn_enc_rval_t     encRetVal;
-   uint8_t            arrIdx;
-   uint8_t            elementCnt;
-   bool  memAllocFailed = false;
+   uint8_t ret = RFAILED;
+   asn_enc_rval_t  encRetVal;
+   E2SM_KPM_EventTriggerDefinition_t eventTiggerDef;
+
+   while(true)
+   {
+      /* Fill E2SM-KPM Event Trigger Definition Format 1 */
+      eventTiggerDef.eventDefinition_formats.present = \
+       E2SM_KPM_EventTriggerDefinition__eventDefinition_formats_PR_eventDefinition_Format1;
+
+      RIC_ALLOC(eventTiggerDef.eventDefinition_formats.choice.eventDefinition_Format1, \
+            sizeof(E2SM_KPM_EventTriggerDefinition_Format1_t));
+      if(eventTiggerDef.eventDefinition_formats.choice.eventDefinition_Format1 == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed at [%s] : line [%d]", __func__, __LINE__);
+         break;
+      }
+
+      eventTiggerDef.eventDefinition_formats.choice.eventDefinition_Format1->reportingPeriod = 1000; /* In ms */
+
+      /* Prints the Msg formed */
+      xer_fprint(stdout, &asn_DEF_E2SM_KPM_EventTriggerDefinition, &eventTiggerDef);
+
+      /* Encode E2SM-KPM Event Trigger Definition */
+      memset(encBuf, 0, ENC_BUF_MAX_LEN);
+      encBufSize = 0;
+      encRetVal = aper_encode(&asn_DEF_E2SM_KPM_EventTriggerDefinition, 0, &eventTiggerDef, PrepFinalEncBuf, encBuf);
+      if(encRetVal.encoded == ENCODE_FAIL)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Could not encode E2SM-KPM event trigger definition structure (at %s)\n",\
+               encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
+         break;
+      }
+
+      /* Copy encoded E2SM-KPM event trigger definition to E2AP octet string buffer */
+      ricEventTriggerDef->size = encBufSize;
+      RIC_ALLOC(ricEventTriggerDef->buf, encBufSize);
+      if(ricEventTriggerDef->buf == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed at [%s] : line [%d]", __func__, __LINE__);
+         break;
+      }
+      memcpy(ricEventTriggerDef->buf, encBuf, encBufSize);
+
+      ret = ROK;
+      break;
+   }
+
+   FreeEventTriggerDef(&eventTiggerDef);
+   return ret;
+}
+
+/*******************************************************************
+ *
+ * @brief builds RIC Subscription Details
+ *
+ * @details
+ *
+ *    Function : BuildsRicSubsDetails
+ *
+ *    Functionality: Builds the RIC Subscription Details
+ *
+ * @params[in] RIC Subscription details to be filled
+ *             RIC subscriotion DB
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ * ****************************************************************/
+
+uint8_t BuildRicSubsDetails(RICsubscriptionDetails_t *subsDetails, RicSubscription *ricSubsDb)
+{
+   uint8_t elementCnt = 0;
+   uint8_t elementIdx = 0;
+
+   if(subsDetails == NULLP)
+   {
+      DU_LOG("\nERROR  -->  E2AP : Failed at [%s] : line [%d]", __func__, __LINE__);
+      return RFAILED;
+   }
+
+   while(true)
+   {
+      /* RIC Event Trigger Definition */
+      if(fillEventTriggerDef(&subsDetails->ricEventTriggerDefinition) != ROK)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Failed at [%s] : line [%d]", __func__, __LINE__);
+         break;
+      }
+
+      /* RIC Actions To Be Setup List */
+      elementCnt = 1;
+      subsDetails->ricAction_ToBeSetup_List.list.count = elementCnt;
+      subsDetails->ricAction_ToBeSetup_List.list.size = elementCnt * sizeof(RICaction_ToBeSetup_ItemIEs_t *);
+      RIC_ALLOC(subsDetails->ricAction_ToBeSetup_List.list.array, subsDetails->ricAction_ToBeSetup_List.list.size);
+      if(subsDetails->ricAction_ToBeSetup_List.list.array  == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation for RICactionToBeSetup Items failed");
+         break;
+      } 
+
+      for(elementIdx = 0; elementIdx < elementCnt; elementIdx++)
+      {
+         RIC_ALLOC(subsDetails->ricAction_ToBeSetup_List.list.array[elementIdx], sizeof(RICaction_ToBeSetup_ItemIEs_t));
+         if(!subsDetails->ricAction_ToBeSetup_List.list.array[elementIdx])
+         {
+            DU_LOG("\nERROR  -->  E2AP : Memory allocation failed at [%s] : line [%d]", __func__, __LINE__);
+            break;
+         }
+      }
+      if(elementIdx < elementCnt)
+         break;
+
+      elementIdx = 0;
+      if(fillActionToBeSetup((RICaction_ToBeSetup_ItemIEs_t *)subsDetails->ricAction_ToBeSetup_List.list.array[elementIdx], \
+         ricSubsDb) != ROK)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Failed at [%s] : line [%d]", __func__, __LINE__);
+         break;
+      }
+
+      return ROK;
+   }
+   return RFAILED;
+}
+
+/*******************************************************************
+ *
+ * @brief Builds and Send the RicSubscriptionReq
+ *
+ * @details
+ *
+ *    Function : BuildAndSendRicSubscriptionReq
+ *
+ * Functionality:Fills the RicSubscriptionReq
+ *
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ ******************************************************************/
+uint8_t BuildAndSendRicSubscriptionReq(DuDb *duDb)
+{
+   uint8_t         ret = RFAILED;
+   E2AP_PDU_t                 *e2apRicMsg = NULL;
+   RICsubscriptionRequest_t   *ricSubscriptionReq;
+   uint8_t         elementCnt;
+   uint8_t         idx;
+   uint8_t         ieId;
+   asn_enc_rval_t  encRetVal;        /* Encoder return value */
+   RanFunction     *ranFuncDb = &duDb->ranFunction[0];
+
+   DU_LOG("\nINFO   -->  E2AP : Building RIC Subscription Request\n");
+
+   while(true)
+   {
+      RIC_ALLOC(e2apRicMsg, sizeof(E2AP_PDU_t));
+      if(e2apRicMsg == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed at [%s] : line [%d]", __func__, __LINE__);
+         break;
+      }
+
+      e2apRicMsg->present = E2AP_PDU_PR_initiatingMessage;
+      RIC_ALLOC(e2apRicMsg->choice.initiatingMessage, sizeof(InitiatingMessageE2_t));
+      if(e2apRicMsg->choice.initiatingMessage == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed at [%s] : line [%d]", __func__, __LINE__);
+         break;
+      }
+      e2apRicMsg->choice.initiatingMessage->procedureCode = ProcedureCodeE2_id_RICsubscription;
+      e2apRicMsg->choice.initiatingMessage->criticality = CriticalityE2_reject;
+      e2apRicMsg->choice.initiatingMessage->value.present = InitiatingMessageE2__value_PR_RICsubscriptionRequest;
+
+      ricSubscriptionReq = &e2apRicMsg->choice.initiatingMessage->value.choice.RICsubscriptionRequest;
+
+      elementCnt = 3;
+      ricSubscriptionReq->protocolIEs.list.count = elementCnt;
+      ricSubscriptionReq->protocolIEs.list.size  = elementCnt * sizeof(RICsubscriptionRequest_IEs_t);
+
+      /* Initialize the subscription members */
+      RIC_ALLOC(ricSubscriptionReq->protocolIEs.list.array, ricSubscriptionReq->protocolIEs.list.size);
+      if(ricSubscriptionReq->protocolIEs.list.array == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation failed at [%s] : line [%d]", __func__, __LINE__);
+         break;
+      }
+
+      for(idx=0; idx<elementCnt; idx++)
+      {
+         RIC_ALLOC(ricSubscriptionReq->protocolIEs.list.array[idx], sizeof(RICsubscriptionRequest_IEs_t));
+         if(ricSubscriptionReq->protocolIEs.list.array[idx] == NULLP)
+         {
+            DU_LOG("\nERROR  -->  E2AP : Memory allocation failed at [%s] : line [%d]", __func__, __LINE__);
+            break;
+         }
+      }
+      if(idx < elementCnt)
+         break;
+
+      /* Filling RIC Request Id */
+      idx = 0;
+      ricSubscriptionReq->protocolIEs.list.array[idx]->id = ProtocolIE_IDE2_id_RICrequestID;
+      ricSubscriptionReq->protocolIEs.list.array[idx]->criticality = CriticalityE2_reject;
+      ricSubscriptionReq->protocolIEs.list.array[idx]->value.present =\
+                                                                      RICsubscriptionRequest_IEs__value_PR_RICrequestID;
+      if(BuildNewRicRequestId(&ricSubscriptionReq->protocolIEs.list.array[idx]->value.choice.RICrequestID, \
+         &ranFuncDb->subscriptionList[ranFuncDb->numOfSubscription].requestId) != ROK)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Failed at [%d] : Line [%d]", __func__, __LINE__);
+         break;
+      }
+
+
+      /* Filling RAN Function Id */
+      idx++;
+      ricSubscriptionReq->protocolIEs.list.array[idx]->id = ProtocolIE_IDE2_id_RANfunctionID;
+      ricSubscriptionReq->protocolIEs.list.array[idx]->criticality = CriticalityE2_reject;
+      ricSubscriptionReq->protocolIEs.list.array[idx]->value.present =\
+                                                                      RICsubscriptionRequest_IEs__value_PR_RANfunctionID;
+      ricSubscriptionReq->protocolIEs.list.array[idx]->value.choice.RANfunctionID = ranFuncDb->id;
+
+      /* Filling RIC Subscription Details */
+      idx++;
+      ricSubscriptionReq->protocolIEs.list.array[idx]->id = ProtocolIE_IDE2_id_RICsubscriptionDetails;
+      ricSubscriptionReq->protocolIEs.list.array[idx]->criticality = CriticalityE2_reject;
+      ricSubscriptionReq->protocolIEs.list.array[idx]->value.present =\
+                                                                      RICsubscriptionRequest_IEs__value_PR_RICsubscriptionDetails;
+      if(BuildRicSubsDetails(&(ricSubscriptionReq->protocolIEs.list.array[idx]->value.choice.RICsubscriptionDetails),\
+         &ranFuncDb->subscriptionList[ranFuncDb->numOfSubscription]) != ROK)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Failed at [%d] : Line [%d]", __func__, __LINE__);
+         break;
+      }
+
+      /* Prints the Msg formed */
+      xer_fprint(stdout, &asn_DEF_E2AP_PDU, e2apRicMsg);
+
+      memset(encBuf, 0, ENC_BUF_MAX_LEN);
+      encBufSize = 0;
+      encRetVal = aper_encode(&asn_DEF_E2AP_PDU, 0, e2apRicMsg, PrepFinalEncBuf, encBuf);
+      if(encRetVal.encoded == ENCODE_FAIL)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Could not encode RicSubscriptionRequest structure (at %s)\n",\
+               encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
+         break;               
+      }
+      else
+      {
+         DU_LOG("\nDEBUG  -->  E2AP : Created APER encoded buffer for RicSubscriptionRequest\n");
+         for(int i=0; i< encBufSize; i++)
+         {
+            DU_LOG("%x",encBuf[i]);
+         } 
+      }
+
+      /* Sending msg */
+      if(SendE2APMsg(RIC_APP_MEM_REG, RIC_POOL, duDb->duId) != ROK)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Sending RIC subscription Request failed");
+         break;
+      }
+
+      ranFuncDb->numOfSubscription++;
+      ret = ROK;
+      break;
+   }
+
+   if(ret == RFAILED)
+      memset(&ranFuncDb->subscriptionList[ranFuncDb->numOfSubscription], 0, sizeof(RicSubscription));
+   FreeRicSubscriptionReq(e2apRicMsg);
+   return ret;
+}
+
+/*******************************************************************
+ *
+ * @brief Process RicSubscriptionResponse
+ *
+ * @details
+ *
+ *    Function : ProcRicSubscriptionRsp
+ *
+ * Functionality: Processes RicSubscriptionRsp
+ *
+ * @return ROK     - void
+ *
+ ******************************************************************/
+
+void ProcRicSubscriptionResponse(uint32_t duId)
+{
+   uint8_t duIdx = 0;
+   DuDb *duDb;
+
+   DU_LOG("\nINFO  -->  E2AP : RICsubscriptionResponse Msg Acknowledged");
+
+   SEARCH_DU_DB(duIdx, duId, duDb);
+   if(duDb)
+      duDb->ricSubscribedToDu = true;
+}
+
+/*******************************************************************
+ *
+ * @brief deallocate the memory allocated in E2SetupFailure
+ *
+ * @details
+ *
+ *    Function : FreeE2SetupFailure 
+ *
+ *    Functionality: deallocate the memory allocated in E2SetupFailure 
+ *
+ * @params[in] E2AP_PDU_t *e2apMsg
+ *
+ * @return void
+ * ****************************************************************/
+void FreeE2SetupFailure(E2AP_PDU_t *e2apMsg)
+{
+   uint8_t arrIdx = 0;
+   E2setupFailure_t  *e2SetupFail;
+
+   if(e2apMsg)
+   {
+      if(e2apMsg->choice.unsuccessfulOutcome)
+      {
+         e2SetupFail = &e2apMsg->choice.unsuccessfulOutcome->value.choice.E2setupFailure;
+         if(e2SetupFail->protocolIEs.list.array)
+         {
+            for(arrIdx=0; arrIdx<e2SetupFail->protocolIEs.list.count; arrIdx++)
+            {
+               RIC_FREE(e2SetupFail->protocolIEs.list.array[arrIdx], sizeof(E2setupFailureIEs_t)); 
+            }
+            RIC_FREE(e2SetupFail->protocolIEs.list.array, e2SetupFail->protocolIEs.list.size);
+         }
+         RIC_FREE(e2apMsg->choice.unsuccessfulOutcome, sizeof(UnsuccessfulOutcomeE2_t));
+      }
+      RIC_FREE(e2apMsg, sizeof(E2AP_PDU_t));
+   }
+}
+
+/*******************************************************************
+ *
+ * @brief Buld and send the E2 Setup failure
+ *
+ * @details
+ *
+ *    Function : BuildAndSendE2SetupFailure
+ *
+ *    Functionality:
+ *         - Buld and send the E2 Setup failure
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ * ****************************************************************/
+
+uint8_t BuildAndSendE2SetupFailure(uint32_t duId, uint8_t transId)
+{
+   E2AP_PDU_t         *e2apMsg = NULL;
+   E2setupFailure_t   *e2SetupFailure;
+   asn_enc_rval_t     encRetVal;
+   uint8_t            arrIdx;
+   uint8_t            elementCnt;
+   bool  memAllocFailed = false;
 
    DU_LOG("\nINFO   -->  E2AP : Building E2 Setup failure\n");
    while(true)
@@ -996,7 +1472,7 @@ uint8_t ProcE2SetupReq(uint32_t *duId, E2setupRequest_t  *e2SetupReq)
                         {
                             *duId =e2SetupReq->protocolIEs.list.array[arrIdx]->value.choice.GlobalE2node_ID.choice.gNB->gNB_DU_ID->buf[0];
 
-                            SEARCH_DU_DB(duIdx, duId, duDb); 
+                            SEARCH_DU_DB(duIdx, *duId, duDb); 
                             if(duDb == NULLP)
                             {
                                duDb = &ricCb.duInfo[ricCb.numDu];
@@ -1017,8 +1493,8 @@ uint8_t ProcE2SetupReq(uint32_t *duId, E2setupRequest_t  *e2SetupReq)
                            {
                               ranFuncItemIe = (RANfunction_ItemIEs_t *) ranFunctionsList->list.array[ranFuncIdx]; 
                               ranFunItem = &ranFuncItemIe->value.choice.RANfunction_Item;
-                              duDb->ranFunction[duDb->numOfRanFunction].id =  ranFunItem->ranFunctionID; 
-                              duDb->ranFunction[ duDb->numOfRanFunction].revisionCounter =  ranFunItem->ranFunctionRevision; 
+                              duDb->ranFunction[ranFunItem->ranFunctionID-1].id = ranFunItem->ranFunctionID; 
+                              duDb->ranFunction[ranFunItem->ranFunctionID-1].revisionCounter = ranFunItem->ranFunctionRevision; 
                               duDb->numOfRanFunction++;
                            }
                         }
@@ -1033,12 +1509,15 @@ uint8_t ProcE2SetupReq(uint32_t *duId, E2setupRequest_t  *e2SetupReq)
                            {
                               if(e2NodeAddList->list.array[e2NodeAddListIdx])
                               {
-                                 e2NodeAddItem = (E2nodeComponentConfigAddition_ItemIEs_t *) e2NodeAddList->list.array[e2NodeAddListIdx];
-                                 if(e2NodeAddItem->value.choice.E2nodeComponentConfigAddition_Item.e2nodeComponentID.choice.\
-                                       e2nodeComponentInterfaceTypeF1)
+                                 e2NodeAddItem = \
+                                    (E2nodeComponentConfigAddition_ItemIEs_t *)e2NodeAddList->list.array[e2NodeAddListIdx];
+                                 if(e2NodeAddItem->value.choice.E2nodeComponentConfigAddition_Item.e2nodeComponentID.\
+                                    choice.e2nodeComponentInterfaceTypeF1)
                                  {
                                     duDb->e2NodeComponent.interfaceType = F1; 
-                                    duDb->e2NodeComponent.componentId = e2NodeAddItem->value.choice.E2nodeComponentConfigAddition_Item.e2nodeComponentID.choice.e2nodeComponentInterfaceTypeF1->gNB_DU_ID.buf[0]; 
+                                    duDb->e2NodeComponent.componentId = \
+                                       e2NodeAddItem->value.choice.E2nodeComponentConfigAddition_Item.e2nodeComponentID.\
+                                       choice.e2nodeComponentInterfaceTypeF1->gNB_DU_ID.buf[0]; 
                                  }
                               }
                            }
@@ -1052,6 +1531,7 @@ uint8_t ProcE2SetupReq(uint32_t *duId, E2setupRequest_t  *e2SetupReq)
             }
         }
    }
+   
    if(BuildAndSendE2SetupRsp(duDb, transId) !=ROK)
    {
       DU_LOG("\nERROR  -->  E2AP : Failed to build and send E2 setup response");
@@ -1434,6 +1914,961 @@ uint8_t ProcE2ResetReq(uint32_t duId, ResetRequestE2_t  *resetReq)
    return ROK;
 }
 
+/*******************************************************************
+ *
+ * @brief deallocate the memory allocated in building the
+ *    Service Query message
+ *
+ * @details
+ *
+ *    Function : FreeRicServiceQuery 
+ *
+ *    Functionality: deallocate the memory allocated in building
+ *    Ric Service Query message
+ *
+ * @params[in] E2AP_PDU_t *e2apMsg
+ *
+ * @return void
+ * ****************************************************************/
+
+void FreeRicServiceQuery(E2AP_PDU_t *e2apMsg)
+{
+   uint8_t arrIdx = 0, ranFuncIdx=0;
+   RANfunctionsID_List_t *ranFuncAcceptedList=NULL;
+   RICserviceQuery_t *ricServiceQuery=NULL;
+   
+   if(e2apMsg)
+   {
+      if(e2apMsg->choice.initiatingMessage)
+      {
+         ricServiceQuery = &e2apMsg->choice.initiatingMessage->value.choice.RICserviceQuery;
+         if(ricServiceQuery->protocolIEs.list.array)
+         {
+            for(arrIdx=0; arrIdx<ricServiceQuery->protocolIEs.list.count; arrIdx++)
+            {
+               if(ricServiceQuery->protocolIEs.list.array[arrIdx])
+               {
+                  switch(ricServiceQuery->protocolIEs.list.array[arrIdx]->id)
+                  {
+                     case ProtocolIE_IDE2_id_RANfunctionsAccepted:
+                        {
+                           ranFuncAcceptedList= &ricServiceQuery->protocolIEs.list.array[arrIdx]->value.choice.RANfunctionsID_List;
+                           if(ranFuncAcceptedList->list.array)
+                           {
+                              for(ranFuncIdx=0;ranFuncIdx<ranFuncAcceptedList->list.count; ranFuncIdx++)
+                              {
+                                 RIC_FREE(ranFuncAcceptedList->list.array[ranFuncIdx], sizeof(RANfunction_ItemIEs_t));
+                              }
+                              RIC_FREE(ranFuncAcceptedList->list.array, ranFuncAcceptedList->list.size);
+                           }
+                           break;
+                        }
+                     case RICserviceQuery_IEs__value_PR_TransactionID:
+                        {
+                           break;
+                        }
+                  }
+                  RIC_FREE(ricServiceQuery->protocolIEs.list.array[arrIdx], sizeof(RICserviceQuery_IEs_t)); 
+               }
+            }
+            RIC_FREE(ricServiceQuery->protocolIEs.list.array, ricServiceQuery->protocolIEs.list.size);
+         }
+         RIC_FREE(e2apMsg->choice.initiatingMessage, sizeof(InitiatingMessageE2_t));
+      }
+      RIC_FREE(e2apMsg, sizeof(E2AP_PDU_t));
+   }
+}
+
+/*******************************************************************
+ *
+ * @brief build and send the ric service Query 
+ *
+ * @details
+ *
+ *    Function : BuildAndSendRicServiceQuery
+ *
+ * Functionality: build and send the ric service Query 
+ * @return ROK     - success
+ *         RFAILED - Acknowledge
+ *
+ ******************************************************************/
+
+uint8_t BuildAndSendRicServiceQuery(DuDb *duDb)
+{
+   uint8_t arrIdx;
+   uint8_t elementCnt;
+   uint8_t ret = RFAILED;
+   bool  memAllocFailed = false;
+   E2AP_PDU_t     *e2apMsg = NULL;
+   asn_enc_rval_t encRetVal;
+   RICserviceQuery_t *ricServiceQuery;
+
+   DU_LOG("\nINFO   -->  E2AP : Building Ric service Query\n");
+   while(true)
+   {
+      RIC_ALLOC(e2apMsg, sizeof(E2AP_PDU_t));
+      if(e2apMsg == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation for E2AP-PDU failed");
+         break;
+      }
+      e2apMsg->present =  E2AP_PDU_PR_initiatingMessage;
+      RIC_ALLOC(e2apMsg->choice.initiatingMessage , sizeof(struct InitiatingMessageE2));
+      if(e2apMsg->choice.initiatingMessage == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation for E2AP-PDU failed");
+         break;
+      }
+
+      e2apMsg->choice.initiatingMessage->procedureCode = ProcedureCodeE2_id_RICserviceQuery;
+      e2apMsg->choice.initiatingMessage->criticality = CriticalityE2_reject;
+      e2apMsg->choice.initiatingMessage->value.present = InitiatingMessageE2__value_PR_RICserviceQuery;
+      ricServiceQuery = &e2apMsg->choice.initiatingMessage->value.choice.RICserviceQuery;
+
+      elementCnt = 1;
+      /* Fill Accepted RAN function IE If Ran function information is stored in databse */
+      if(duDb->numOfRanFunction)
+         elementCnt++;
+
+      ricServiceQuery->protocolIEs.list.count = elementCnt;
+      ricServiceQuery->protocolIEs.list.size  = elementCnt * sizeof(RICserviceQuery_IEs_t*);
+
+      RIC_ALLOC(ricServiceQuery->protocolIEs.list.array, ricServiceQuery->protocolIEs.list.size);
+      if(ricServiceQuery->protocolIEs.list.array == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation for ricServiceQueryIEs failed");
+         break;
+      }
+
+      for(arrIdx=0; arrIdx<elementCnt; arrIdx++)
+      {
+         RIC_ALLOC(ricServiceQuery->protocolIEs.list.array[arrIdx], sizeof(RICserviceQuery_IEs_t));
+         if(ricServiceQuery->protocolIEs.list.array[arrIdx] == NULLP)
+         {
+            DU_LOG("\nERROR  -->  E2AP : Memory allocation for ricServiceQueryIEs failed");
+            memAllocFailed = true;
+            break;
+         }
+      }
+      if(memAllocFailed == true)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation for ricServiceQueryIEs failed");
+         break;
+      }
+
+      /* Trans Id */
+      arrIdx = 0;
+      ricServiceQuery->protocolIEs.list.array[arrIdx]->id = ProtocolIE_IDE2_id_TransactionID;
+      ricServiceQuery->protocolIEs.list.array[arrIdx]->criticality = CriticalityE2_reject;
+      ricServiceQuery->protocolIEs.list.array[arrIdx]->value.present = RICserviceQuery_IEs__value_PR_TransactionID;
+      ricServiceQuery->protocolIEs.list.array[arrIdx]->value.choice.TransactionID  = assignTransactionId(duDb);
+      
+      if(duDb->numOfRanFunction)
+      {
+         /* Accepted RAN function Id */
+         arrIdx++;
+         ricServiceQuery->protocolIEs.list.array[arrIdx]->id = ProtocolIE_IDE2_id_RANfunctionsAccepted;
+         ricServiceQuery->protocolIEs.list.array[arrIdx]->criticality = CriticalityE2_reject;
+         ricServiceQuery->protocolIEs.list.array[arrIdx]->value.present = RICserviceQuery_IEs__value_PR_RANfunctionsID_List;
+         if(BuildRanFunctionAcceptedList(duDb, 0, NULL, &ricServiceQuery->protocolIEs.list.array[arrIdx]->value.choice.RANfunctionsID_List, ProcedureCodeE2_id_RICserviceQuery)!=ROK)
+         {
+            DU_LOG("\nERROR  -->  E2AP : Failed to build Ran function added list");
+            break;         
+         }
+      }
+      
+      xer_fprint(stdout, &asn_DEF_E2AP_PDU, e2apMsg);
+      memset(encBuf, 0, ENC_BUF_MAX_LEN);
+      encBufSize = 0;
+      encRetVal = aper_encode(&asn_DEF_E2AP_PDU, 0, e2apMsg, PrepFinalEncBuf, encBuf);
+
+      /* Check encode results */
+      if(encRetVal.encoded == ENCODE_FAIL)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Could not encode RIC service Query structure (at %s)\n",\
+               encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
+         break;
+      }
+      else
+      {
+         DU_LOG("\nDEBUG  -->  E2AP : Created APER encoded buffer for RIC service Query\n");
+         for(int i=0; i< encBufSize; i++)
+         {
+            DU_LOG("%x",encBuf[i]);
+         }
+      }
+
+      if(SendE2APMsg(RIC_APP_MEM_REG, RIC_POOL, duDb->duId) != ROK)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Sending of RIC service  Query failed");
+         break;
+      }
+
+      ret =ROK;
+      break;
+   }
+   FreeRicServiceQuery(e2apMsg);
+   return ret;
+}
+
+/*******************************************************************
+ *
+ * @brief deallocate the memory allocated in RicServiceUpdateFailure
+ *
+ * @details
+ *
+ *    Function : FreeRicServiceUpdateFailure 
+ *
+ *    Functionality: deallocate the memory allocated in RicServiceUpdatefailure
+ *
+ * @params[in] E2AP_PDU_t *e2apMsg
+ *
+ * @return void
+ * ****************************************************************/
+
+void FreeRicServiceUpdateFailure(E2AP_PDU_t *e2apMsg)
+{
+   uint8_t arrIdx = 0;
+   RICserviceUpdateFailure_t *ricServiceUpdateFailure=NULL;
+   
+   if(e2apMsg)
+   {
+      if(e2apMsg->choice.unsuccessfulOutcome)
+      {
+         ricServiceUpdateFailure = &e2apMsg->choice.unsuccessfulOutcome->value.choice.RICserviceUpdateFailure;
+         if(ricServiceUpdateFailure->protocolIEs.list.array)
+         {
+            for(arrIdx=0; arrIdx<ricServiceUpdateFailure->protocolIEs.list.count; arrIdx++)
+            {
+               RIC_FREE(ricServiceUpdateFailure->protocolIEs.list.array[arrIdx], sizeof(RICserviceUpdateFailure_IEs_t)); 
+            }
+            RIC_FREE(ricServiceUpdateFailure->protocolIEs.list.array, ricServiceUpdateFailure->protocolIEs.list.size);
+         }
+         RIC_FREE(e2apMsg->choice.unsuccessfulOutcome, sizeof(UnsuccessfulOutcomeE2_t));
+      }
+      RIC_FREE(e2apMsg, sizeof(E2AP_PDU_t));
+   }
+}
+
+/*******************************************************************
+ *
+ * @brief fill E2 failure cause 
+ *
+ * @details
+ *
+ *    Function : fillE2FailureCause
+ *
+ * Functionality: fill E2 failure cause
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ ******************************************************************/
+
+void fillE2FailureCause(CauseE2_t *cause, CauseE2_PR causePresent, uint8_t reason)
+{
+   cause->present = causePresent;
+
+   switch(cause->present)
+   {
+      case CauseE2_PR_ricRequest:
+         cause->choice.ricRequest = reason;
+         break;
+      case CauseE2_PR_ricService:
+         cause->choice.ricService = reason;
+         break;
+      case CauseE2_PR_e2Node:
+         cause->choice.e2Node = reason;
+         break;
+      case CauseE2_PR_transport:
+         cause->choice.transport = reason;
+         break;
+      case CauseE2_PR_protocol:
+         cause->choice.protocol = reason;
+         break;
+      case CauseE2_PR_misc:
+         cause->choice.misc = reason;
+         break;
+      default:
+         cause->choice.misc = CauseE2Misc_unspecified;
+         break;
+   }
+}
+
+/*******************************************************************
+ *
+ * @brief build and send the ric service update failure 
+ *
+ * @details
+ *
+ *    Function : BuildAndSendRicServiceUpdateFailure
+ *
+ * Functionality: build and send the ric service update failure 
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ ******************************************************************/
+
+uint8_t BuildAndSendRicServiceUpdateFailure(uint32_t duId, int8_t transId, CauseE2_PR causePresent, uint8_t reason)
+{
+
+   E2AP_PDU_t         *e2apMsg = NULL;
+   asn_enc_rval_t     encRetVal;
+   uint8_t            ret = RFAILED;
+   uint8_t            arrIdx=0;
+   uint8_t            elementCnt=0;
+   RICserviceUpdateFailure_t *ricServiceFailure=NULL;
+
+   DU_LOG("\nINFO   -->  E2AP : Building Ric service update failure\n");
+   while(true)
+   {
+      RIC_ALLOC(e2apMsg, sizeof(E2AP_PDU_t));
+      if(e2apMsg == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation for E2AP-PDU failed");
+         break;
+      }
+      e2apMsg->present =  E2AP_PDU_PR_unsuccessfulOutcome;
+      RIC_ALLOC(e2apMsg->choice.unsuccessfulOutcome , sizeof(struct UnsuccessfulOutcomeE2));
+      if(e2apMsg->choice.unsuccessfulOutcome == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation for E2AP-PDU failed");
+         break;
+      }
+
+      e2apMsg->choice.unsuccessfulOutcome->procedureCode = ProcedureCodeE2_id_RICserviceUpdate;
+      e2apMsg->choice.unsuccessfulOutcome->criticality = CriticalityE2_reject;
+      e2apMsg->choice.unsuccessfulOutcome->value.present = UnsuccessfulOutcomeE2__value_PR_RICserviceUpdateFailure;
+      ricServiceFailure = &e2apMsg->choice.unsuccessfulOutcome->value.choice.RICserviceUpdateFailure;
+
+      elementCnt = 3;
+      ricServiceFailure->protocolIEs.list.count = elementCnt;
+      ricServiceFailure->protocolIEs.list.size  = elementCnt * sizeof(RICserviceUpdateFailure_IEs_t *);
+
+      RIC_ALLOC(ricServiceFailure->protocolIEs.list.array, ricServiceFailure->protocolIEs.list.size);
+      if(ricServiceFailure->protocolIEs.list.array == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation for ricServiceFailureIEs failed");
+         break;
+      }
+
+      for(arrIdx=0; arrIdx<elementCnt; arrIdx++)
+      {
+         RIC_ALLOC(ricServiceFailure->protocolIEs.list.array[arrIdx], sizeof(RICserviceUpdateFailure_IEs_t));
+         if(ricServiceFailure->protocolIEs.list.array[arrIdx] == NULLP)
+         {
+            DU_LOG("\nERROR  -->  E2AP : Memory allocation for ricServiceFailureIEs failed");
+            break;
+         }
+      }
+      if(arrIdx<elementCnt)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation for ricServiceFailureIEs failed");
+         break;
+      }
+
+      /* Trans Id */
+      arrIdx = 0;
+      ricServiceFailure->protocolIEs.list.array[arrIdx]->id = ProtocolIE_IDE2_id_TransactionID;
+      ricServiceFailure->protocolIEs.list.array[arrIdx]->criticality = CriticalityE2_reject;
+      ricServiceFailure->protocolIEs.list.array[arrIdx]->value.present = RICserviceUpdateFailure_IEs__value_PR_TransactionID;
+      ricServiceFailure->protocolIEs.list.array[arrIdx]->value.choice.TransactionID  = transId;
+
+      arrIdx++;
+      ricServiceFailure->protocolIEs.list.array[arrIdx]->id = ProtocolIE_IDE2_id_CauseE2;
+      ricServiceFailure->protocolIEs.list.array[arrIdx]->criticality = CriticalityE2_reject;
+      ricServiceFailure->protocolIEs.list.array[arrIdx]->value.present = RICserviceUpdateFailure_IEs__value_PR_CauseE2;
+      fillE2FailureCause(&ricServiceFailure->protocolIEs.list.array[arrIdx]->value.choice.CauseE2, causePresent, reason);
+
+      arrIdx++;
+      ricServiceFailure->protocolIEs.list.array[arrIdx]->id = ProtocolIE_IDE2_id_TimeToWaitE2;
+      ricServiceFailure->protocolIEs.list.array[arrIdx]->criticality = CriticalityE2_ignore;
+      ricServiceFailure->protocolIEs.list.array[arrIdx]->value.present = RICserviceUpdateFailure_IEs__value_PR_TimeToWaitE2;
+      ricServiceFailure->protocolIEs.list.array[arrIdx]->value.choice.TimeToWaitE2 = TimeToWaitE2_v5s;
+
+      xer_fprint(stdout, &asn_DEF_E2AP_PDU, e2apMsg);
+      memset(encBuf, 0, ENC_BUF_MAX_LEN);
+      encBufSize = 0;
+      encRetVal = aper_encode(&asn_DEF_E2AP_PDU, 0, e2apMsg, PrepFinalEncBuf, encBuf);
+
+      /* Check encode results */
+      if(encRetVal.encoded == ENCODE_FAIL)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Could not encode RIC service update failure structure (at %s)\n",\
+               encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
+         break;
+      }
+      else
+      {
+         DU_LOG("\nDEBUG  -->  E2AP : Created APER encoded buffer for RIC service update Failure\n");
+         for(int i=0; i< encBufSize; i++)
+         {
+            DU_LOG("%x",encBuf[i]);
+         }
+      }
+
+      if(SendE2APMsg(RIC_APP_MEM_REG, RIC_POOL, duId) != ROK)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Sending RIC service update failed");
+         break;
+      }
+      ret = ROK;
+      break;
+   }
+
+   FreeRicServiceUpdateFailure(e2apMsg);
+   return ret;
+}
+
+
+/*******************************************************************
+ *
+ * @brief deallocate the memory allocated in RicServiceUpdateAck(
+ *
+ * @details
+ *
+ *    Function : FreeRicServiceUpdateAck 
+ *
+ *    Functionality: deallocate the memory allocated in RicServiceUpdateAck
+ *
+ * @params[in] E2AP_PDU_t *e2apMsg
+ *
+ * @return void
+ * ****************************************************************/
+
+void FreeRicServiceUpdateAck(E2AP_PDU_t *e2apMsg)
+{
+   uint8_t arrIdx = 0, ranFuncIdx=0;
+   RANfunctionsID_List_t *acceptedList=NULL;
+   RICserviceUpdateAcknowledge_t *ricServiceUpdateAck=NULL;
+   RANfunctionsIDcause_List_t  *rejectedList=NULL;
+
+   if(e2apMsg)
+   {
+      if(e2apMsg->choice.successfulOutcome)
+      {
+         ricServiceUpdateAck = &e2apMsg->choice.successfulOutcome->value.choice.RICserviceUpdateAcknowledge;
+         if(ricServiceUpdateAck->protocolIEs.list.array)
+         {
+            for(arrIdx=0; arrIdx<ricServiceUpdateAck->protocolIEs.list.count; arrIdx++)
+            {
+               if(ricServiceUpdateAck->protocolIEs.list.array[arrIdx])
+               {
+                  switch(ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->id)
+                  {
+                     case ProtocolIE_IDE2_id_RANfunctionsAccepted:
+                        {
+                           acceptedList= &ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->value.choice.RANfunctionsID_List;
+                           if(acceptedList->list.array)
+                           {
+                              for(ranFuncIdx=0;ranFuncIdx<acceptedList->list.count; ranFuncIdx++)
+                              {
+                                 RIC_FREE(acceptedList->list.array[ranFuncIdx], sizeof(RANfunction_ItemIEs_t));
+                              }
+                              RIC_FREE(acceptedList->list.array, acceptedList->list.size);
+                           }
+                           break;
+                        }
+
+                     case ProtocolIE_IDE2_id_RANfunctionsRejected:
+                        {
+                           rejectedList= &ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->value.choice.RANfunctionsIDcause_List;
+                           if(rejectedList->list.array)
+                           {
+                              for(ranFuncIdx=0;ranFuncIdx<rejectedList->list.count; ranFuncIdx++)
+                              {
+                                 RIC_FREE(rejectedList->list.array[ranFuncIdx], sizeof(RANfunctionIDcause_ItemIEs_t));
+                              }
+                              RIC_FREE(rejectedList->list.array, rejectedList->list.size);
+                           }
+                           break;
+                        }
+                  }
+                  RIC_FREE(ricServiceUpdateAck->protocolIEs.list.array[arrIdx], sizeof(RICserviceUpdateAcknowledge_IEs_t)); 
+               }
+            }
+            RIC_FREE(ricServiceUpdateAck->protocolIEs.list.array, ricServiceUpdateAck->protocolIEs.list.size);
+         }
+         RIC_FREE(e2apMsg->choice.successfulOutcome, sizeof(SuccessfulOutcomeE2_t));
+      }
+      RIC_FREE(e2apMsg, sizeof(E2AP_PDU_t));
+   }
+}
+
+/*******************************************************************
+ *
+ * @brief Build RAN function rejected list
+ *
+ * @details
+ *
+ *    Function : BuildRanFunctionRejectedList
+ *
+ *    Functionality: Build RAN function rejected list 
+ *
+ * @params[in] 
+ *    Count of ran functions to be rejected in the list 
+ *    Received list of RAN functions
+ *
+ * @return ROK - success
+ *         RFAILED - failure
+ * ****************************************************************/
+
+uint8_t BuildRanFunctionRejectedList(uint8_t count, RanFunction *ranFunRejectedList, RANfunctionsIDcause_List_t *ranFuncRejectedList)
+{
+   uint8_t ranFuncIdx = 0;
+   RANfunctionIDcause_ItemIEs_t *ranFuncRejectedItemIe=NULL;
+   
+   ranFuncRejectedList->list.count = count;
+   
+   ranFuncRejectedList->list.size = ranFuncRejectedList->list.count*sizeof(RANfunctionIDcause_ItemIEs_t*);
+   RIC_ALLOC(ranFuncRejectedList->list.array, ranFuncRejectedList->list.size);
+   if(ranFuncRejectedList->list.array == NULLP)
+   {
+      DU_LOG("\nERROR  -->  E2AP : Memory allocation for RAN function rejected list array");
+      return RFAILED;
+   }
+   
+   for(ranFuncIdx = 0; ranFuncIdx< ranFuncRejectedList->list.count; ranFuncIdx++)
+   {
+      RIC_ALLOC(ranFuncRejectedList->list.array[ranFuncIdx], sizeof(RANfunctionIDcause_ItemIEs_t));
+      if(ranFuncRejectedList->list.array[ranFuncIdx] == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation for RAN function rejected list array item");
+         return RFAILED;
+      }
+      ranFuncRejectedItemIe = (RANfunctionIDcause_ItemIEs_t*)ranFuncRejectedList->list.array[ranFuncIdx];
+      ranFuncRejectedItemIe->id = ProtocolIE_IDE2_id_RANfunctionIEcause_Item;
+      ranFuncRejectedItemIe->criticality= CriticalityE2_ignore;
+      ranFuncRejectedItemIe->value.present = RANfunctionIDcause_ItemIEs__value_PR_RANfunctionIDcause_Item;
+      ranFuncRejectedItemIe->value.choice.RANfunctionIDcause_Item.ranFunctionID = ranFunRejectedList[ranFuncIdx].id;
+      fillE2FailureCause(&ranFuncRejectedItemIe->value.choice.RANfunctionIDcause_Item.cause, CauseE2_PR_ricService,\
+            CauseE2RICservice_ran_function_not_supported);
+   }
+   
+   return ROK;
+}
+
+/*******************************************************************
+ *
+ * @brief build and send the ric service update Acknowledge 
+ *
+ * @details
+ *
+ *    Function : BuildAndSendRicServiceUpdateAcknowledge
+ *
+ * Functionality: build and send the ric service update Acknowledge 
+ * @return ROK     - success
+ *         RFAILED - Acknowledge
+ *
+ ******************************************************************/
+
+uint8_t BuildAndSendRicServiceUpdateAcknowledge(DuDb *duDb, int8_t transId, RicTmpRanFunList ricRanFuncList)
+{
+   E2AP_PDU_t         *e2apMsg = NULL;
+   asn_enc_rval_t     encRetVal;
+   uint8_t  arrIdx=0, elementCnt=0, ret=RFAILED;;
+   RICserviceUpdateAcknowledge_t *ricServiceUpdateAck=NULL;
+
+   DU_LOG("\nINFO   -->  E2AP : Building Ric service update Acknowledge\n");
+   while(true)
+   {
+      RIC_ALLOC(e2apMsg, sizeof(E2AP_PDU_t));
+      if(e2apMsg == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation for E2AP-PDU failed");
+         break;
+      }
+      e2apMsg->present =  E2AP_PDU_PR_successfulOutcome;
+      RIC_ALLOC(e2apMsg->choice.successfulOutcome , sizeof(struct SuccessfulOutcomeE2));
+      if(e2apMsg->choice.successfulOutcome == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation for E2AP-PDU failed");
+         break;
+      }
+
+      e2apMsg->choice.successfulOutcome->procedureCode = ProcedureCodeE2_id_RICserviceUpdate;
+      e2apMsg->choice.successfulOutcome->criticality = CriticalityE2_reject;
+      e2apMsg->choice.successfulOutcome->value.present = SuccessfulOutcomeE2__value_PR_RICserviceUpdateAcknowledge;
+      ricServiceUpdateAck = &e2apMsg->choice.successfulOutcome->value.choice.RICserviceUpdateAcknowledge;
+
+      elementCnt = 1;
+      if(ricRanFuncList.numOfRanFunAccepted)
+         elementCnt++;
+      if(ricRanFuncList.numOfRanFuneRejected)
+         elementCnt++;
+      
+
+      ricServiceUpdateAck->protocolIEs.list.count = elementCnt;
+      ricServiceUpdateAck->protocolIEs.list.size  = elementCnt * sizeof(RICserviceUpdateAcknowledge_IEs_t*);
+
+      RIC_ALLOC(ricServiceUpdateAck->protocolIEs.list.array, ricServiceUpdateAck->protocolIEs.list.size);
+      if(ricServiceUpdateAck->protocolIEs.list.array == NULLP)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation for ricServiceUpdateAckIEs failed");
+         break;
+      }
+
+      for(arrIdx=0; arrIdx<elementCnt; arrIdx++)
+      {
+         RIC_ALLOC(ricServiceUpdateAck->protocolIEs.list.array[arrIdx], sizeof(RICserviceUpdateAcknowledge_IEs_t));
+         if(ricServiceUpdateAck->protocolIEs.list.array[arrIdx] == NULLP)
+         {
+            DU_LOG("\nERROR  -->  E2AP : Memory allocation for ricServiceUpdateAckIEs failed");
+            break;
+         }
+      }
+      if(arrIdx<elementCnt)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Memory allocation for ricServiceUpdateAckIEs failed");
+         break;
+      }
+
+      /* Trans Id */
+      arrIdx = 0;
+      ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->id = ProtocolIE_IDE2_id_TransactionID;
+      ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->criticality = CriticalityE2_reject;
+      ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->value.present = RICserviceUpdateAcknowledge_IEs__value_PR_TransactionID;
+      ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->value.choice.TransactionID  = transId;
+
+      if(ricRanFuncList.numOfRanFunAccepted)
+      {
+         /* Accepted RAN function List */
+         arrIdx++;
+         ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->id = ProtocolIE_IDE2_id_RANfunctionsAccepted;
+         ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->criticality = CriticalityE2_reject;
+         ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->value.present = RICserviceUpdateAcknowledge_IEs__value_PR_RANfunctionsID_List;
+         if(BuildRanFunctionAcceptedList(duDb, ricRanFuncList.numOfRanFunAccepted, ricRanFuncList.ranFunAcceptedList,\
+         &ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->value.choice.RANfunctionsID_List, ProcedureCodeE2_id_RICserviceUpdate)!=ROK)       
+         {
+            DU_LOG("\nERROR  -->  E2AP : Failed to build Ran function added list");
+            break;         
+         }
+      }
+      
+      if(ricRanFuncList.numOfRanFuneRejected)
+      {
+         /* RAN Functions Rejected List */
+         arrIdx++;
+         ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->id = ProtocolIE_IDE2_id_RANfunctionsRejected;
+         ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->criticality = CriticalityE2_reject;
+         ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->value.present = RICserviceUpdateAcknowledge_IEs__value_PR_RANfunctionsIDcause_List;
+         if(BuildRanFunctionRejectedList(ricRanFuncList.numOfRanFuneRejected, ricRanFuncList.ranFunRejectedList, \
+         &ricServiceUpdateAck->protocolIEs.list.array[arrIdx]->value.choice.RANfunctionsIDcause_List)!=ROK)       
+         {
+            DU_LOG("\nERROR  -->  E2AP : Failed to build Ran function rejected list");
+            break;         
+         }
+      }
+      
+      
+      xer_fprint(stdout, &asn_DEF_E2AP_PDU, e2apMsg);
+      memset(encBuf, 0, ENC_BUF_MAX_LEN);
+      encBufSize = 0;
+      encRetVal = aper_encode(&asn_DEF_E2AP_PDU, 0, e2apMsg, PrepFinalEncBuf, encBuf);
+
+      /* Check encode results */
+      if(encRetVal.encoded == ENCODE_FAIL)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Could not encode RIC service update Acknowledge structure (at %s)\n",\
+               encRetVal.failed_type ? encRetVal.failed_type->name : "unknown");
+         break;
+      }
+      else
+      {
+         DU_LOG("\nDEBUG  -->  E2AP : Created APER encoded buffer for RIC service update Acknowledge\n");
+         for(int i=0; i< encBufSize; i++)
+         {
+            DU_LOG("%x",encBuf[i]);
+         }
+      }
+
+      if(SendE2APMsg(RIC_APP_MEM_REG, RIC_POOL, duDb->duId) != ROK)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Sending RIC service update ack failed");
+         break;
+      }
+      ret =ROK;
+      break;
+   }
+   FreeRicServiceUpdateAck(e2apMsg);
+   return ret; 
+}
+
+/*******************************************************************
+ *
+ * @brief process the RIC service update 
+ *
+ * @details
+ *
+ *    Function : ProcRicserviceUpdate 
+ *
+ * Functionality: process the RIC service update 
+ *
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ ******************************************************************/
+
+void ProcRicServiceUpdate(uint32_t duId, RICserviceUpdate_t *ricServiceUpdate)
+{
+   RicTmpRanFunList ricRanFuncList;
+   DuDb    *duDb = NULLP;
+   int8_t transId =-1;
+   uint8_t duIdx = 0, elementCnt =0, arrIdx = 0; 
+   uint16_t ranFuncIdx = 0, failedRanFuncCount=0, recvdRanFuncCount=0;
+   RANfunction_ItemIEs_t *ranFuncItemIe =NULL;
+   RANfunction_Item_t  *ranFuncItem =NULL;
+   RANfunctionID_Item_t  *ranFuncIdItem=NULL;
+   RANfunctions_List_t *ranFuncList=NULL;
+   RANfunctionsID_List_t *deleteList=NULL;
+   RANfunctionID_ItemIEs_t *delRanFuncItem=NULL;
+
+   SEARCH_DU_DB(duIdx, duId, duDb); 
+   if(duDb == NULLP)
+   {
+      DU_LOG("\nERROR  -->  E2AP : duDb is not present for duId %d",duId);
+      return;
+   }
+   memset(&ricRanFuncList, 0, sizeof(RicTmpRanFunList)); 
+
+   if(!ricServiceUpdate)
+   {
+      DU_LOG("\nERROR  -->  E2AP : ricServiceUpdate pointer is null"); 
+      return;
+   }
+
+   if(!ricServiceUpdate->protocolIEs.list.array)      
+   {
+      DU_LOG("\nERROR  -->  E2AP : ricServiceUpdate array pointer is null");
+      return;
+   }
+   elementCnt = ricServiceUpdate->protocolIEs.list.count;
+   for(arrIdx=0; arrIdx<ricServiceUpdate->protocolIEs.list.count; arrIdx++)
+   {
+      if(!ricServiceUpdate->protocolIEs.list.array[arrIdx])
+      {
+         DU_LOG("\nERROR  -->  E2AP : ricServiceUpdate array idx %d pointer is null",arrIdx);
+         return;
+      }
+
+      switch(ricServiceUpdate->protocolIEs.list.array[arrIdx]->id)
+      {
+         case ProtocolIE_IDE2_id_TransactionID:
+            {
+               transId = ricServiceUpdate->protocolIEs.list.array[arrIdx]->value.choice.TransactionID;
+
+               if(transId < 0 || transId > 255)
+               {
+                  DU_LOG("\nERROR  -->  E2AP : Received invalid transId %d",transId);
+                  return;
+               }
+               break;
+            }
+
+         case ProtocolIE_IDE2_id_RANfunctionsAdded:
+            {
+               ranFuncList = &ricServiceUpdate->protocolIEs.list.array[arrIdx]->value.choice.RANfunctions_List;
+
+               if(ranFuncList->list.array)
+               {
+                  for(ranFuncIdx=0;ranFuncIdx<ranFuncList->list.count; ranFuncIdx++)
+                  {
+                     ranFuncItemIe = (RANfunction_ItemIEs_t *) ranFuncList->list.array[ranFuncIdx]; 
+                     ranFuncItem = &ranFuncItemIe->value.choice.RANfunction_Item;
+
+                     /* Adding the ran function in temporary list */
+                     ricRanFuncList.ranFunAcceptedList[ricRanFuncList.numOfRanFunAccepted].id =  ranFuncItem->ranFunctionID; 
+                     ricRanFuncList.ranFunAcceptedList[ricRanFuncList.numOfRanFunAccepted].revisionCounter = ranFuncItem->ranFunctionRevision; 
+                     ricRanFuncList.numOfRanFunAccepted++;
+
+                     /* Adding the new ran function in DB*/
+                     duDb->ranFunction[ranFuncItem->ranFunctionID-1].id = ranFuncItem->ranFunctionID;
+                     duDb->ranFunction[ranFuncItem->ranFunctionID-1].revisionCounter = ranFuncItem->ranFunctionRevision;
+                     duDb->numOfRanFunction++;
+
+                     /* Calculating total number of ran fuctions which are received for addition */
+                     recvdRanFuncCount++;
+                  }
+               }
+               break;
+            }
+
+         case ProtocolIE_IDE2_id_RANfunctionsModified:
+            {
+
+               ranFuncList = &ricServiceUpdate->protocolIEs.list.array[arrIdx]->value.choice.RANfunctions_List; 
+               if(ranFuncList->list.array)
+               {
+                  for(ranFuncIdx = 0; ranFuncIdx< ranFuncList->list.count; ranFuncIdx++)
+                  {
+                     ranFuncItemIe = (RANfunction_ItemIEs_t *) ranFuncList->list.array[ranFuncIdx];
+                     ranFuncItem = &ranFuncItemIe->value.choice.RANfunction_Item;
+                     if(duDb->ranFunction[ranFuncItem->ranFunctionID-1].id != ranFuncItem->ranFunctionID)
+                     {
+                        /* Calculating total number of ran fuctions which are not present */
+                        failedRanFuncCount++;
+
+                        /* Adding the ran function in temporary list */
+                        ricRanFuncList.ranFunRejectedList[ricRanFuncList.numOfRanFuneRejected].id =  ranFuncItem->ranFunctionID; 
+                        ricRanFuncList.numOfRanFuneRejected++;
+                     }
+                     else
+                     {
+
+                        /* Adding the ran function in temporary list */
+                        ricRanFuncList.ranFunAcceptedList[ricRanFuncList.numOfRanFunAccepted].id =  ranFuncItem->ranFunctionID; 
+                        ricRanFuncList.ranFunAcceptedList[ricRanFuncList.numOfRanFunAccepted].revisionCounter = ranFuncItem->ranFunctionRevision; 
+                        ricRanFuncList.numOfRanFunAccepted++;
+
+                        /* Updating the new ran function in DB*/
+                        duDb->ranFunction[ranFuncItem->ranFunctionID-1].revisionCounter = ranFuncItem->ranFunctionRevision;
+                     }
+                     /* Calculating total number of ran fuctions which are received for modification */
+                     recvdRanFuncCount++;
+                  }
+               }
+               break;
+            }
+         case ProtocolIE_IDE2_id_RANfunctionsDeleted:
+            {
+
+               deleteList = &ricServiceUpdate->protocolIEs.list.array[arrIdx]->value.choice.RANfunctionsID_List; 
+               if(deleteList->list.array)
+               {
+                  for(ranFuncIdx = 0; ranFuncIdx< deleteList->list.count; ranFuncIdx++)
+                  {
+                     delRanFuncItem  = (RANfunctionID_ItemIEs_t*) deleteList->list.array[ranFuncIdx];
+                     ranFuncIdItem = &delRanFuncItem->value.choice.RANfunctionID_Item;
+                     if(duDb->ranFunction[ranFuncIdItem->ranFunctionID-1].id == ranFuncIdItem->ranFunctionID)
+                     {
+                        memset(&duDb->ranFunction[ranFuncIdItem->ranFunctionID-1], 0, sizeof(RanFunction));
+                        duDb->numOfRanFunction--; 
+                     }
+
+                     /* Calculating total number of ran fuctions which are received for deletion */
+                     recvdRanFuncCount++;
+                  }
+               }
+               break;
+            }
+
+         default:
+            {
+               DU_LOG("\nERROR  -->  E2AP : IE [%ld] is not supported",ricServiceUpdate->protocolIEs.list.array[arrIdx]->id);
+               break;
+            }
+      }
+   }
+   
+   /* Sending RIC Service Update Failed if all RAN Functions received fail or if any IE processing fails
+    * Else sending RIC Service Update Acknowledge */  
+   if((elementCnt > arrIdx) ||((recvdRanFuncCount > 0) && (recvdRanFuncCount == failedRanFuncCount)))
+   {
+      if(BuildAndSendRicServiceUpdateFailure(duDb->duId, transId, CauseE2_PR_misc, CauseE2Misc_unspecified) != ROK)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Failed to build and send RIC service update Failure");
+         return;
+      }
+   }
+   else
+   {
+      if(BuildAndSendRicServiceUpdateAcknowledge(duDb, transId, ricRanFuncList) != ROK)
+      {
+         DU_LOG("\nERROR  -->  E2AP : Failed to build and send RIC service update acknowledge");
+         return;
+      }
+   }
+}
+
+/*******************************************************************
+ *
+ * @brief Processing RIC subscription failure from DU
+ *
+ * @details
+ *
+ *    Function : ProcRicSubscriptionFailure
+ *
+ * Functionality: Processing RIC subscription failure from DU
+ *
+ * @param  ID of DU from which message was sent
+ *         RIC Subscription failure message
+ * @return ROK     - success
+ *         RFAILED - failure
+ *
+ ******************************************************************/
+uint8_t ProcRicSubscriptionFailure(uint32_t duId, RICsubscriptionFailure_t *ricSubscriptionFailure)
+{
+   uint8_t ieIdx = 0, duIdx = 0, subsIdx = 0;
+   uint8_t ranFuncId = 0;
+   bool   ricReqIdDecoded = false;
+   DuDb    *duDb = NULLP;
+   RanFunction *ranFuncDb = NULLP;
+   RicRequestId ricReqId;
+   RICsubscriptionFailure_IEs_t *ricSubsFailIe = NULLP;
+
+   DU_LOG("\nINFO  -->  E2AP : Received RIC subscription failure");
+
+   SEARCH_DU_DB(duIdx, duId, duDb);
+   if(duDb == NULLP)
+   {
+      DU_LOG("\nERROR  -->  E2AP : duDb is not present for duId %d",duId);
+      return;
+   }
+
+   memset(&ricReqId, 0, sizeof(RicRequestId));
+   if(ricSubscriptionFailure)
+   {
+      if(ricSubscriptionFailure->protocolIEs.list.array)
+      {
+         for(ieIdx=0; ieIdx<ricSubscriptionFailure->protocolIEs.list.count; ieIdx++)
+         {
+            if(ricSubscriptionFailure->protocolIEs.list.array[ieIdx])
+            {
+               ricSubsFailIe = ricSubscriptionFailure->protocolIEs.list.array[ieIdx];
+               switch(ricSubscriptionFailure->protocolIEs.list.array[ieIdx]->id)
+               {
+                  case ProtocolIE_IDE2_id_RICrequestID:
+                  {
+                     ricReqId.requestorId = ricSubsFailIe->value.choice.RICrequestID.ricRequestorID;
+                     ricReqId.instanceId = ricSubsFailIe->value.choice.RICrequestID.ricInstanceID;
+                     ricReqIdDecoded = true;
+                     break;
+                  }
+                  case ProtocolIE_IDE2_id_RANfunctionID:
+                  {
+                     ranFuncId = ricSubsFailIe->value.choice.RANfunctionID;
+                     if(duDb->ranFunction[ranFuncId-1].id == ranFuncId)
+                     {
+                        ranFuncDb = &duDb->ranFunction[ranFuncId-1];
+                     }
+                     break; 
+                  }
+                  case ProtocolIE_IDE2_id_CauseE2:
+                  default:
+                     /* No handling required as of now since this is a stub */
+                     break;
+
+               }
+            }
+         }
+
+         /* Remove subscription entry from RAN Function */
+         if(ranFuncDb && ricReqIdDecoded)
+         {
+            for(subsIdx = 0; subsIdx < ranFuncDb->numOfSubscription; subsIdx++)
+            {
+               if((ranFuncDb->subscriptionList[subsIdx].requestId.requestorId == ricReqId.requestorId) &&
+                     (ranFuncDb->subscriptionList[subsIdx].requestId.instanceId == ricReqId.instanceId))
+               {
+                  memset(&ranFuncDb->subscriptionList[subsIdx], 0, sizeof(RicSubscription));
+                  break;
+               }
+            }
+         }
+      }
+   }
+   return ROK;
+}
+
 /*******************************************************************
 *
 * @brief Handles received E2AP message and sends back response  
@@ -1529,6 +2964,13 @@ void E2APMsgHdlr(uint32_t *duId, Buffer *mBuf)
                      DU_LOG("\nINFO  -->  E2AP : RIC Indication Acknowledged");
                      break;
                   }
+               case InitiatingMessageE2__value_PR_RICserviceUpdate:
+                  {
+                     DU_LOG("\nINFO  -->  E2AP : RIC Service update received");
+                     ProcRicServiceUpdate(*duId,  &e2apMsg->choice.initiatingMessage->value.choice.RICserviceUpdate);
+                     break;
+                  }
+
                default:
                   {
                      DU_LOG("\nERROR  -->  E2AP : Invalid type of intiating message [%d]",e2apMsg->choice.initiatingMessage->value.present);
@@ -1555,6 +2997,25 @@ void E2APMsgHdlr(uint32_t *duId, Buffer *mBuf)
             }
             break; 
          }
+         case E2AP_PDU_PR_unsuccessfulOutcome:
+         {
+            switch(e2apMsg->choice.successfulOutcome->value.present)
+            {
+               case UnsuccessfulOutcomeE2__value_PR_RICsubscriptionFailure:
+                  {
+                     ProcRicSubscriptionFailure(*duId, \
+                        &e2apMsg->choice.unsuccessfulOutcome->value.choice.RICsubscriptionFailure);
+                     break;
+                  }
+               default:
+                  {
+                     DU_LOG("\nERROR  -->  E2AP : Invalid type of unsuccessfulOutcome message [%d]", \
+                        e2apMsg->choice.unsuccessfulOutcome->value.present);
+                     return;
+                  }
+            }
+            break;
+         }
       default:
          {
             DU_LOG("\nERROR  -->  E2AP : Invalid type message type ");