The client name in the clients edit page in OAuth Manager is always displayed as the first Client in the list.
CA API Managment OAuth Toolkit 4.0
The exact reason was not known.
The issue can be resolved by adding the sga user under "OTK User Attribute Look Up Extension line 8". Please ref to Document to review how to add an admin role: https://docops.ca.com/ca-api-management-oauth-toolkit/4-2/en/otk-user-role-configuration.
However if the issue is not resolved by above then please upgrade to CA API Managment OAuth Toolkit 4.1 which resolved the issue in this case.