Partner & is a one-time supplier

What causes this issue?

You have used a one-time vendor as a partner.
Note, that using a one-time vendor in a partner function can cause
problems in follow-on documents.

System Response

You can set the system behavior in Customizing.

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

INCLUDE 'CUSTOMIZED_MESSAGE_INFO' OBJECT DOKU ID TX

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.