When attempting to add a Tag on a Device in PAM, the PAM End-User get's the following error:
PAM-CMN-0338: Device <Device Name> was not updated due to Password Authority authorization errors
Release : 3.4.x
Component : PRIVILEGED ACCESS MANAGEMENT
Ultimately on their Password Management Group their Target Group didn't have access to the servers in question.
Therefore on the PAM UI >> Credentials >> Managed Targets >> Target Groups.
On their Target Group in Question -> I had them update it for all servers with the "Not Contains" with a very unique value of "$$$$$" -> which resolved the issue.