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EDI Vallen 855
X12 Outbound

Vallen X12 855 Purchase Order Acknowledgment

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

Segments
11
Loops
4
X12 855
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Schema reference

11 segments · 4 loops · X12 855 Purchase Order Acknowledgment

ISA

ISA Interchange Control Header

GS

GS Functional Group Header

ST

Transaction Set Header

BAK

Beginning Segment for Purchase Order Acknowledgment

REF

Reference Identification

DTM

Date/Time Reference

Loop
PO1

Baseline Item Data

Loop
PID

Product/Item Description

Loop
ACK

Line Item Acknowledgment

Loop
CTT

Transaction Totals

SE

Transaction Set Trailer

Trading partners

3+ trading partners.
And every channel covered.

We connect to every major retailer, distributor, and 3PL on the EDI network. Type to search the directory, or browse the full catalogue.

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Vallen EDI 855 FAQ

Common questions about 855 Purchase Order Acknowledgment with Vallen.

What is X12 855 Purchase Order Acknowledgment?
X12 855 (Purchase Order Acknowledgment) is the EDI transaction set used to exchange purchase order acknowledgment data. Vallen requires it from trading partners.
Does Vallen require 855 for trading partners?
Yes — Vallen supports X12 855 Purchase Order Acknowledgment. Stacksync handles the full integration so your team can focus on operations.
How fast can I integrate Vallen 855 with Stacksync?
Most companies go live with Vallen 855 on Stacksync in days. Pre-built mappings, no-code setup, and real-time monitoring make EDI compliance straightforward.

Ready to automate your Vallen EDI?

Most teams go live in days, not months. Talk to our team and we'll walk you through your specific setup.

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