SAP Message WP109 - Billing doc. contains no items

Diagnosis
The invoice contains no items.

System Response
The system did not post the invoice.

Procedure
Using error/status reporting, check whether errors occurred while thebilling document items were being prepared. Correct the errors andrepeat inbound processing .
If no errors have been logged, the IDoc may not contain any items. Youcan check this by viewing the relevant IDoc areas.