Hi Experts,
Existing assignments option is not fetching the roles data for specific users.
For example:
Requester wants to remove certain roles for user A from system SYSA. When Requester clicks on existing assignments option, it is popping up with SYSA but not the roles of the user A.
But it is working fine for user B. It is showing all the list of roles assigned to user B in SYSA.
It is not an authorization issue. The connector settings are fine.
I have checked the validity of roles for user A in SYSA and validity is till 31.12.9999
Unable to figure out the issue. 
Image1 - Roles are fetching for user B from SYSA.Everything is good here.
Image2- Roles are not fetching for user A from SYSA. It is just showing the existence of system.
GRC 10. SP 20
Any expert views please. Thanks a lot for your help.
Regards,
Surya