To start and identify an interchange of zero or more functional groups and interchange-related control segments
Dow Inc. X12 855 Purchase Order Acknowledgment
X12 855 (Purchase Order Acknowledgment) is the EDI transaction exchanged between Dow Inc. (Dow) and its trading partners. Stacksync handles full compliance, mapping, and real-time delivery.
- Segments
- 12
- Loops
- 2
- X12 855
- All partners ↗
Transaction context
Where 855 Purchase Order Acknowledgment fits on Dow
On Dow, the X12 855 Purchase Order Acknowledgment follows the 850 Purchase Order in the Order-to-cash cycle.
- Dow Inc. channels
- 1 of 1
- Trading partners
- 269
- Channels
- 328
1 of Dow Inc.'s 1 channel carries 855
partners across the Stacksync network trade 855
channels network-wide carry 855
Most common alongside 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
| 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 — 12 segments 2 loops · X12 855 Purchase Order Acknowledgment
To indicate the beginning of a functional group and to provide control information
To indicate the start of a transaction set and to assign a control number
To indicate the beginning of the Purchase Order Acknowledgment Transaction Set and transmit identifying numbers and dates
To specify identifying information
To specify basic item identification data
To specify physical measurements or counts, including dimensions, tolerances, variances, and weights (See Figures Appendix for example of use of C001)
N9 Loop Repeat: 1,000
To transmit identifying information as specified by the Reference Identification Qualifier
To provide a free-form format that allows the transmission of text information
PO1 Loop Repeat: 100,000
To specify basic and most frequently used line item data
To specify pertinent dates and times
To indicate the end of the transaction set and provide the count of the transmitted segments (including the beginning (ST) and ending (SE) segments)
Trading partners
9+ 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.
PU Purchase Order MO Motor Carrier Load Tender RE Response To A Load Tender TR Transportation Carrier Shipment Status Message WA Warehouse Shipping Order WA Warehouse Stock Transfer Shipment Advice WA Warehouse Shipping Advice WA Warehouse Inventory Adjustment Advice RE Receiving Advice Acceptance Certificate
No trading partner matches your search.
Browse the full directory
Dow Inc. Dow EDI 855 FAQ
Common questions about 855 Purchase Order Acknowledgment on the Dow 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. Dow Inc.'s Dow channel requires it from trading partners.
Does Dow Inc. Dow require 855 for trading partners?
Yes, Dow Inc. (Dow) supports X12 855 Purchase Order Acknowledgment. Stacksync handles the full integration so your team can focus on operations.
How fast can I integrate Dow Inc. 855 with Stacksync?
Most companies go live with Dow 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 Dow?
On Dow, X12 855 is typically exchanged alongside 850 Purchase Order. Stacksync maps each document into the same ERP or WMS workflow, so the full cycle stays in sync end to end.
Ready to automate your Dow Inc. EDI?
Most teams go live in days, not months. Talk to our team and we'll walk you through your specific setup.
