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Converting Unchecked Deliveries into
Deliveries 
In cross-system transactions, the purchase order history of the purchase order is updated with the message type PO_UPDATEPOHISTORY when the unchecked delivery is converted to a delivery.
The delivery copies either the total confirmed quantity, or a partial quantity confirmed using the ATP check. The delivery then behaves as if you had reduced the quantity manually.
· You create deliveries for unchecked deliveries in the ERP sysetm. The deliveries perform an availability check in SAP APO.
· The interface with the transportation processing system is guaranteed.
When changes are made to quantities and delivery dates, the system updates the purchase order and, where required, triggers a new delivery of the remaining quantity.
When a delivery is deleted, the purchase order decides whether a new unchecked delivery should be created.
