EDI Reference / segments / ACK
ACK
Line Item Acknowledgment
Per-line response on an 855 — accepted, backordered, changed, rejected.
Key elements
| Element | Name | What it carries |
|---|---|---|
| ACK01 | Line Status | IA=accepted, IB=backordered, IR=rejected, IC=changed. |
| ACK02/03 | Quantity & UOM | Quantity acknowledged. |
Key elements only — the ones that matter in retail trade, not the full element list.
Appears in
See a real ACK in context — paste any X12 and the Inspector breaks out every segment.
Inspect an X12 free