SAP Message AJ872 - Child print document reversal: Doc.no. &1 (doc. for PI) ended with error

Diagnosis
The document to be reversed (document &V1&) belongs to an installationgroup. It is the document of the main installation.
In this case, document &V1& has to be reversed separately.
However, an error occurred during the reversal of document &V1&.

Procedure
Correct the error in document &V1& and start the reversal again.