Add Large Gallery Fails with DiagCode: 404#5152 on p2p calls

Describe the issue
The Recording Application I have adds Large Gallery Bot for Participant Video feed (to have up to 50 Video Streams in one Combined).

But I have an issue in the following scenario

Two users under Policy start a p2p call/ user A calls user B:
as soon as user B accepts the call user A is forwaded to voicemail and no call between the two parties is initiated, voicemail can be recorded just fine.

My logs show an exception of the AddLargeGallery() Method

exception: Code: 404
      Message: Unexpected 'Failed' status for operation 84630ecd-a5a8-4839-8dda-4575b3e0cc3d:
Not Found. DiagCode: 404#5152.@
      AdditionalData:
        subcode: 5152

@samarthasthana
@zhengni-msft
@ssulzer

• What is subcode 5152?
• What should I do to avoid this error?
• Why does this error cancel the whole call? (I would expect it just stops adding the LargeGalleryApplication)

Graph SDK (please complete the following information):

Call ID

• 781f5c00-ab72-4d8d-89e2-be110c58261d at 2024-02-27T09:03 UTC

Start with the recorded Call ID, the AddLargeGallery() exception, and the listed Graph Communications package versions. Reproduce or trace the p2p call where user B accepts, then determine what subcode 5152 means, how to avoid it, and whether the gallery failure should cancel the call; document the findings and verified workaround.