SAP Message VQ236 - The step counter is empty for the discrete check against prod. allocation

Diagnosis
The cumulative check against product allocations is set for productallocation procedure &V1&.
Only one product allocation step is possible for this check method. Thestep counter must be left empty (or at 0).

System Response
The step counter is deleted.

Procedure
If several check steps are to be carried out for product allocation,you need to set the cumulative check.
You set the type of check when you maintain the procedure.