Data inconsistency during processing of document &1.

What causes this issue?

When processing the document &V1& data inconsistency is discovered. The
reasons for this inconsistency are described in the following messages.

System Response

Processing of the documents stops.

How to fix this error?

Analyze - if available - the following messages. Try to solve the issues
and repeat processing.

Error message extract from SAP system. Copyright SAP SE.