SAP Message /ISIDEX/EDEREG_INV029 - Missing allocation of internal ID to external ID

Diagnosis
In Customizing under Define Check Parameters, the settingsspecify the document lines containing the service ID &v1& are to bechecked. However, this service ID is not allocated to any part of theincoming bill under External ID in activity Define ID forBill and Payment Advice Note Parts.

System Response
The bill receipt check is terminated.

Procedure
Check your Customizing settings.