--- /dev/null
+*** Settings ***
+Documentation Verify SMO get security error response while issuing APIs with incorrect token
+# Library REST ssl_verify=False loglevel=DEBUG
+Library REST ssl_verify=False
+Variables ${EXECDIR}${/}test_configs.yaml
+
+Suite Setup Set REST Headers
+
+*** Variables ***
+${ORAN_HOST_EXTERNAL_IP} ${ocloud.oran_o2_app.api.host}
+${ORAN_SERVICE_NODE_PORT} ${ocloud.oran_o2_app.api.node_port}
+${GLOBAL_OCLOUD_ID1} ${ocloud.oran_o2_app.g_ocloud_id}
+${SMO_TOKEN_DATA} ${ocloud.oran_o2_app.smo_token_data}
+${globalLocationId} ${ocloud.oran_o2_app.g_location_id}
+
+${ORAN_O2IMS_ENDPOINT} ${ocloud.oran_o2_app.api.protocol}://${ORAN_HOST_EXTERNAL_IP}:${ORAN_SERVICE_NODE_PORT}
+
+${SMO_TOKEN_DATA_INVALID} ${ocloud.oran_o2_app.smo_token_data}[10:]${ocloud.oran_o2_app.smo_token_data}[:10]
+
+
+*** Test Cases ***
+s1, Issue API Request without Authorization Bearer Token Header
+ [documentation] This test case verifies Issue API Request without Authorization Bearer Token Header
+ [tags] ORAN_Compliance ORAN_O2 ORAN_O2IMS ORAN_O2IMS_Client_Errors
+
+ Clear Expectations
+ # Set Headers {"Authorization": "Bearer ${SMO_TOKEN_DATA}"}
+ Expect Response Body ${CURDIR}/schemas/client_errors_properties.json
+ ${res} GET ${ORAN_O2IMS_ENDPOINT}/o2ims-infrastructureInventory/v1/
+ # Output Schema response body ${CURDIR}/schemas/.output/client_errors_properties.json
+ # Clear Expectations
+ log ${res} level=DEBUG
+ Integer response status 401
+ # Object response body
+
+s2, Issue API Request with Authorization Bearer Token Header and invalid token
+ [documentation] This test case verifies Issue API Request with Authorization Bearer Token Header and invalid token
+ [tags] ORAN_Compliance ORAN_O2 ORAN_O2IMS ORAN_O2IMS_Client_Errors
+
+ Clear Expectations
+ Set Headers {"Authorization": "Bearer ${SMO_TOKEN_DATA_INVALID}"}
+ Expect Response Body ${CURDIR}/schemas/client_errors_properties.json
+ ${res} GET ${ORAN_O2IMS_ENDPOINT}/o2ims-infrastructureInventory/v1/resourceTypes?fields=(resourceTypeId,WrongAttrName)
+ # Clear Expectations
+ log ${res} level=DEBUG
+ Integer response status 401
+ # Object response body
+
+s3, Issue API Request with Authorization Bearer Token Header and valid token
+ [documentation] This test case verifies Issue API Request with Authorization Bearer Token Header and valid token
+ [tags] ORAN_Compliance ORAN_O2 ORAN_O2IMS ORAN_O2IMS_Client_Errors
+
+ # Clear Expectations
+ Set Headers {"Authorization": "Bearer ${SMO_TOKEN_DATA}"}
+ Expect Response Body ${CURDIR}/schemas/ocloud_properties.json
+ ${res} GET ${ORAN_O2IMS_ENDPOINT}/o2ims-infrastructureInventory/v1
+ # Output Schema response body ${CURDIR}/schemas/.output/ocloud_properties.json
+ Clear Expectations
+ log ${res} level=DEBUG
+ Integer response status 200
+ Object response body
+
+
+*** Keywords ***
+Set REST Headers
+ Set Headers {"accept": "application/json"}
+ Set Headers {"Content-Type": "application/json"}
+ # Set Headers {"Authorization": "Bearer ${SMO_TOKEN_DATA}"}