The responding node has no record of the context this request refers to (Context not found).
Where you see it
In the Cause IE of a GTPv1-C response (Create PDP Context, Update PDP Context…) on Gn/Gp.
What to check
Check whether the context was already torn down on the responding node before this request arrived.
Check which GSN sent the response: the cause belongs to that node's decision.
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