Storage loc. &1 does not exist in plant &2

What causes this issue?

Storage location &V1& was entered in the header segment of the IDoc.
However, this supplier does not exist in plant &V2&.

System Response

The system cannot post the external document with this header segment.

How to fix this error?

Enter the correct storage location in the IDoc editor and then post the
IDoc again.

Error message extract from SAP system. Copyright SAP SE.