When a partner's goods-in team opens the ASN, they are checking it against cartons on a pallet, not the order a buyer confirmed weeks earlier. If the advance ship notice still describes what was ordered rather than what the warehouse actually picked, packed and shipped, the file gets queried, the dock holds the delivery, and the invoice behind it is wrong before anyone notices. Platforms like Deposco, Mintsoft, Peoplevox and SnapFulfil WMS all generate that ASN from the pick, not the order, and the EDI feeding a partner has to be built around that fact.