Hi all,
I'm facing the similar issue like this ticket . My Cisco ISE version is 3.1 with the latest patch 10 (3.1.0.518). I'm sure that the account has the right privileges (ERS operation, ERS Admin, System Admin). I can list guest users with REST APIs, but cannot suspend/reinstate with 401 error. I can do write operations (create, suspend, reinstate, etc.) from sponsor portal. Could anyone help to check it? Here is the example to suspend a guest user with Postman.

Thanks,
Paul