EDI 855 (Purchase Order Acknowledgment)
The supplier’s electronic confirmation of a received purchase order.
Also known as: 855, PO acknowledgment
What is EDI 855 (Purchase Order Acknowledgment)?
The EDI 855 is the supplier’s acknowledgment of an 850 purchase order. It confirms the order and accepts, rejects, or proposes changes to line items — flagging backorders, price discrepancies, or date shifts. It gives the buyer early visibility into whether the order will ship as requested, before anything leaves the dock.
How Endless handles it
Endless can generate 855s automatically from live order status, flagging exceptions the moment they appear instead of letting them surface later as chargebacks.
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