Diagnosis
You have tried to change an inbound delivery of the vendor using anIDoc. This is only possible if the inbound delivery refers to a pick-uplist, and if the vendor enters the reference to this pick-up list inthe IDoc.

System Response
The system rejects the change as it cannot identify the inbounddelivery.

Procedure
The reference to the pick-up list or the item of the pick-up list mustbe entered in in segment E1EDL51 (in case of header changes) orin segment E1EDL52 (in case of item changes).