Error Message :
In AWI, it is not possible to edit a user from another client in client 0. Save and Edit-button are grayed out:
OS Version: N/A
Root Cause: An error was fixed that made it impossible to edit users of other clients in client 0.
Update to a fix version listed below or a newer version if available
Fix Status: Released
Automation Engine 12.1.0 - Available
Edit the user in its client.