SAP Message VLSC006 - Fix quantities restored. Please check

Diagnosis
The delivery quantity of delivery item &V1& &V2& was changed from zeroto a value greater than zero. Subcontracting components exist for thisdelivery item with fixed quantities.

System Response
The fix quantities have been restored to the values before the deliveryquantity was set to zero.

Procedure
Check the fix quantities of the subcontracting components for thisdelivery item.