Request accepted, but only partially — some part of what was requested couldn't be fulfilled.
Where you see it
In the Cause IE of a GTPv2-C response (Create Session, Modify Bearer, Delete Session…) on S11, S5 or S8.
What to check
Check the message detail for which part of the request wasn't honored.
Check which node sent the response (MME, SGW or PGW): the cause belongs to that node's decision.
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