When the delivery and the shipment process goes smoothly, it seems redundant, but in practice we are faced with situations where deliveries do not come in full, or part of the items are defective. In such cases, we cannot prep the FBA shipment of sets and bundles in full and some of the items stay in our warehouse. You will always be able to see stock balance of items and change the shipment or create a new one to effectively make use of them and increase your profit.