Diagnosis
When costs have been incurred on a settlement unit, a document headeris added during invoice entry. However, no document header relevant tothis settlement unit was found. It is possible that this is due to areverse document or that the header was cancelled.

System Response
The costs belonging to the document header cannot be determined.

Procedure
Referring to your receipts, check whether costs have been incurred onthe settlement unit and posted. If they have, inform your systemadministrator with details of the error number and the activity. If nocosts have been incurred or there is a reverse document, ignore thismessage.