SAP Message 7Q391 - Internal error during creation of withholding tax info (see long text)

Diagnosis
An error has occurred in the calculation of the withholding taxinformation.
The document entered cannot be posted and/or paid due to inconsistentwithholding tax information.

Procedure
Check how you entered the document - whether anything unusual happenedduring document entry. Try to reproduce the error.
Notify SAP about how you created this error.