The EDI 855, Decoded: The Purchase Order Acknowledgment Is Where the Order Becomes a Promise

An 855 · Purchase Order Acknowledgment is the seller's business answer to an 850 · Purchase Order: yes, no, or yes-with-changes — line by line, with quantities, prices, and ship dates the seller is actually committing to. It is not a receipt. The receipt was the 997 · Functional Acknowledgment.

Source: [Dev.to](https://dev.to/challan116ux/the-edi-855-decoded-the-purchase-order-acknowledgment-is-where-the-order-becomes-a-promise-293i)