Diagnosis
You want to reverse a backflush that was used to enter productionactivities. The documents to be reversed must be imported.

System Response
The original activity document & & no longer exists.

Procedure
Test whether the activity documents have been archived/reorganized.Without the corresponding activity document, no document-relatedreversal can be executed. If the activity document to be reversedcannot be retrieved, you can execute a document-neutral reversal.