SAP Message WH031 - The associated physical inventory document item has a different mat. no.

Diagnosis
In the intermediate document, there is a clear reference to therespective inventory document item for this item. There is howeveranother material specified in the intermediate document item than inthe inventory document item.

System Response
The system cannot update this intermediate document item.

Procedure
You can enter either the line number of the correct inventorydocument item using the intermediate document editor or completelydelete the reference to the inventory document item (physicalinventory document, fiscal year and line number). In the latter case,the appropriate inventory document item is determined by the systemif you update the intermediate document again.