Diagnosis
If you want to create an additionals IDoc, the system must recognizethe relevant message category for each additional. The message categoryis used to determine the quantity of data to be selected.

System Response
Without the message category, the system cannot create an IDoc.

Procedure
Determine the material group of additional &V1&. Then maintain thelogical message category for thismaterial group in Customizing for theadditional.
INCLUDE ISR_CUSTOMIZING