Associated physical inventory document item contains a different supplier

What causes this issue?

For this item, the IDoc contains a unique reference to the associated
physical inventory document item. However, different suppliers are
entered in the IDoc item and the physical inventory document item.

System Response

The system cannot post this IDoc item.

How to fix this error?

Enter the correct supplier in the IDoc editor and then post the IDoc
again.

Error message extract from SAP system. Copyright SAP SE.