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X12 EDI

Gierd Inc X12 855 Purchase Order Acknowledgment

X12 855 (Purchase Order Acknowledgment) is the EDI transaction exchanged between Gierd Inc (Gierd Default) and its trading partners. Stacksync handles full compliance, mapping, and real-time delivery.

Segments
0
Loops
4
X12 855
All partners ↗

Transaction context

Where 855 Purchase Order Acknowledgment fits on Gierd Default

On Gierd Default, the X12 855 Purchase Order Acknowledgment follows the 850 Purchase Order and precedes the 856 Ship Notice Manifest in the Order-to-cash cycle.

Gierd Inc channels
1 of 1

1 of Gierd Inc's 1 channel carries 855

Trading partners
269

partners across the Stacksync network trade 855

Channels
328

channels network-wide carry 855

The 855 is the seller's formal response to an 850 purchase order: accept as submitted, accept with changes to price, quantity, dates, or items, or reject. Buyers require it to confirm the order is committed before shipment and to surface availability, pricing, and item discrepancies while there is still time to correct them. Many retail compliance programs mandate it within a defined window, commonly 24 to 48 hours of PO receipt, and failure to send required response documents on time can result in financial penalties under vendor compliance programs. Sent by the supplier or vendor to the buyer that issued the purchase order.

When it fires: A supplier's order management system finishes validating an inbound purchase order against its item master, pricing, and available inventory.

Common 855 rejection causes
  • Acknowledgments sent after the buyer's required response window, commonly 24 to 48 hours, exposing the supplier to compliance penalties.
  • PO number or line references that do not match the original 850, so the buyer's system cannot tie the acknowledgment back to the order.
  • Inaccurate product identifiers or prices echoed back on the acknowledgment, creating discrepancies that persist into the ship notice and invoice.
  • Missing or inconsistent acknowledgment status codes, leaving the buyer unsure whether changed quantities, dates, or backorders were actually committed.

Specification summary

X12 855 Purchase Order Acknowledgment at the element level

The X12 855 specification defines 54 segments carrying 204 data elements, 72 of which are mandatory.

Segments
54
Data elements
204
Mandatory elements
72
Segments with mandatory elements
Segment Elements Mandatory
BAK 6 4
CUR 2 2
REF 3 1
FOB 3 1
SAC 10 1
DTM 4 1
TXI 7 1
N9 3 1
MSG 2 1
N1 4 1
N2 2 1
Key identifiers in 855
  • Transaction Set Purpose Code
  • Acknowledgment Type
  • Purchase Order Number
  • Date
  • Entity Identifier Code
  • Currency Code
  • Reference Identification Qualifier
  • Shipment Method of Payment
Full segment guideline — 0 segments 4 loops · X12 855 Purchase Order Acknowledgment
N1 Loop
PO1 Loop
ACK Loop
CTT Loop

Trading partners

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Gierd Inc Gierd Default EDI 855 FAQ

Common questions about 855 Purchase Order Acknowledgment on the Gierd Default channel.

What is X12 855 Purchase Order Acknowledgment?
X12 855 (Purchase Order Acknowledgment) is the EDI transaction set used to exchange purchase order acknowledgment data. Gierd Inc's Gierd Default channel requires it from trading partners.
Does Gierd Inc Gierd Default require 855 for trading partners?
Yes, Gierd Inc (Gierd Default) supports X12 855 Purchase Order Acknowledgment. Stacksync handles the full integration so your team can focus on operations.
How fast can I integrate Gierd Inc 855 with Stacksync?
Most companies go live with Gierd Inc 855 on Stacksync in days. Pre-built mappings, no-code setup, and real-time monitoring make EDI compliance straightforward.
Which documents accompany 855 on Gierd Default?
On Gierd Default, X12 855 is typically exchanged alongside 850 Purchase Order, 856 Ship Notice Manifest. Stacksync maps each document into the same ERP or WMS workflow, so the full cycle stays in sync end to end.

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