We seem to have problems when we back order products on the customer's purchase order. What can we do about this?

Answer: : . Aside from the obvious answer, which is to ship complete - or alternatively ship partial and cancel any back order I suggest that 'someone' in your company check with the customers that you intend to ship partial and back order to and find out if their accounting system can pay partial shipments and back orders. Many accounts payable systems are only capable of generating one payment against a purchase order.