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Error codes › GTPv1-C cause

GTPv1 cause 129 New PDP type due to network preference

GTPv1-C cause3GPP TS 29.060 §7.7.1

What it means

Accepted, but the network assigned a different PDP type than requested, based on its own preference.

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 which GSN sent the response: the cause belongs to that node's decision.

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