No Partial Shipment by Item


We have a customer who needs to setup EOne (8.11) to prevent partial shipments for specific items.

The sales orders are created using Z files so I tried setting the partial shipment flag to 'N' on the EDI detail lines for the item.
Unfortunately R47011 replaced the value in APTS with 'Y' because the customer billing instructions are set to allow partial shipments.

Does anyone have ideas on how to prevent partial shipments of an item without modifying Customer Master?
your help is greatly appreciated