Hi Swati,
Check in class CL_GRFN_AUTH_ENGINE method GET_AGENTS if you have the corrections of SAP note 2154060.
The note considers regulation specific roles again. This issue was raised in SP 18 of GRC 10.0.
This error in SWIA is very familiar to me and I believe the corrections of note 2154060 will resolve the
problem.
Another test you can perform is the following:
Using cross regulation roles, the work items are always forwarded to the fallback receiver.
Fernando