In vCPE use case, the following query fails:

https://10.12.5.69:30233/aai/v11/search/nodes-query?search-node-type=service-instance&filter=service-instance-id:EQUALS:27c8319c-90de-4799-83ce-11baea144dae

The error message is:

{"requestError":{"policyException":{"messageId":"POL3300","text":"Unauthorized (msg=%1) (ec=%2)","variables":["Unauthorized","ERR.5.1.3300"]}}}

The same query worked in Casablanca Maintenance Release. 

Have also tried to use v14 and v15 to replace v11 in the above query, and failed with the same error message. The problem doesn't seem to be credential because the same credential works with query https://10.12.5.69:30233/aai/v14/business/customers/customer/Demonstration?depth=all