Message SAP /BEV2/EDMESS1722 - Not all cancelled documents can be hidden

Diagnosis
During the analysis of cancelled movements, errors occurred whilereading the material documents. The material document is essential fordetermining the original document.
Material documents have probably been archived (table MSEG) in theinterim.

System Response
Cancelled documents and the cancellation document are issued completelyor in part. The balance of the movements remains correct as thesemovements cancel out.