Diagnosis
In the transferred item, both a customer material number as well as anSAP material number (your material number) have been specified. A matchcannot be determined in any item of the determined sales document / inthe determined delivery.

System Response
The item cannot be processed in this way.

Procedure
Using the "Process Errors" function, you can change both the transferredcustomer material number, as well as the SAP material number.
In this case however, you must ensure that the data is correct in thesubsequent successful assignment of transferred item to an item in thesales document/in the delivery.
You must check in any case why the material numbers do not match. It ispossible that you are using an incorrect customer material number in theunderlying order/delivery plan that is then also copied incorrectly intothe deliveries.
Or, your customer is using an incorrect material number from you.
You should also check why both material references are being used. Ifnecessary, adjust your business process so that only one of the twopossible numbers can be used in future for item assignment.
In this case, you must ensure that only one of the two numbers istransferred in the segment/field E1EDP19-IDTNR with the correspondingqualifier (E1EDP19-QUALF) at the interface between the EDI system andthe IDoc interface of the SAP system.