SAP Message WOG024 - Collective purchase order: no material found (vendor &1)

Diagnosis
The system was unable to find any material for the current vendor inthe planning list.

System Response
Processing terminated.

Procedure
INCLUDE ISR_VERWALTUNG

Procedure for System Administration
This is an internal transfer error when the function modules forcollective PO processing were called from the perishables planninglist. If you cannot solve this problem on your own, contact SAP.