After generating the access token in postman I am trying to list the publications using below Url
https://hostname/api/v2.0/publications
But I am getting below error in postman
"message" : "access denied for the user client-id#" "data":{ "errorCode": "AccessDenied", "category" : "security" }
I am referring "Tridion Sites Content Manager API client(admin)" service account and client id to generate the token.
But I am not sure about this error. can you please help me on this issue.