The sales org. is not assigned to the same company code as exg. partner &

What causes this issue?

The error occurs because the sales organization is not assigned to
the same company code as the exchange partner (vendor record).
- The exchange partner is &v1&.
- The sales organization is &v3&.
- This sales organization is assigned to company code &v2&.
Exchange partner &v1& is not defined in company code &v2&.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check that you have entered the correct exchange partner and/or sales
organization for this Negotiated payment.

Error message extract from SAP system. Copyright SAP SE.