X12
Outbound

Wayfair LLC X12 855 Purchase Order Acknowledgment

Wayfair
The EDI 855 confirms receipt and acceptance of a Wayfair LLC Purchase Order. Suppliers must respond promptly indicating whether the order is accepted, rejected, or accepted with changes to maintain compliance standing.
17segments
4loops
5mandatory

Schema Reference

17 segments · X12 855 Purchase Order Acknowledgment

ISA ISA Interchange Control Header
Mandatory Max: 1
ISA01 Authorization Information Qualifier
M ID 2-2
ISA02 Authorization Information
M AN 10-10
ISA03 Security Information Qualifier
M ID 2-2
ISA04 Security Information
M AN 10-10
ISA05 Interchange ID Qualifier
M ID 2-2
ISA06 Interchange Sender ID
M AN 15-15
ISA07 Interchange ID Qualifier
M ID 2-2
ISA08 Interchange Receiver ID
M AN 15-15
ISA09 Interchange Date
M DT 6-6
ISA10 Interchange Time
M TM 4-4
ISA11 Repetition Separator M MIN 1 MAX 1 ID: I65 Type is not applicable; the repetition separator is a delimiter and not a data element; this field provides the delimiter used to separate repeated occurrences of a simple data element or a composite data structure; this value must be different than the data element separator, component element separator, and the segment terminator ISA12 Interchange Control Version Number
M ID 5-5
ISA13 Interchange Control Number
M N0 9-9
ISA14 Acknowledgment Requested
M ID 1-1
ISA15 Usage Indicator
M ID 1-1
GS GS Functional Group Header
Mandatory Max: 1
GS01 Functional Identifier Code
M ID 2-2
GS02 Application Sender's Code
M AN 2-15
GS03 Application Receiver's Code
M AN 2-15
GS04 Date
M DT 8-8
GS05 Time
M TM 4-8
GS06 Group Control Number
M N0 1-9
GS07 Responsible Agency Code
M ID 1-2
GS08 Version / Release / Industry Identifier Code
M AN 1-12
ST Transaction Set Header
Mandatory Max: 1
ST01 Transaction Set Identifier Code
M ID 3-3
ST02 Transaction Set Control Number
M AN 4-9
BAK Beginning Segment for Purchase Order Acknowledgment
Mandatory Max: 1
BAK01 Transaction Set Purpose Code
M ID 2-2
BAK02 Acknowledgment Type
M ID 2-2
BAK03 Purchase Order Number
M AN 1-22
BAK04 Date
M DT 8-8
REF Reference Identification
REF01 Reference Identification Qualifier
M ID 2-3
REF02 Reference Identification
C AN 1-50
REF03 Description
C AN 1-80
TD5 Carrier Details (Routing Sequence/Transit Time)
Optional Max: 12
TD502 Identification Code Qualifier
C ID 1-2
TD503 Identification Code
C AN 2-80
TD504 Transportation Method/Type Code
C ID 1-2
TD505 Routing
C AN 1-35
N1 Loop Repeat: 200
N1 Name
Optional Max: 1
N101 Entity Identifier Code
M ID 2-3
N102 Name
C AN 1-60
N103 Identification Code Qualifier
C ID 1-2
N104 Identification Code
C AN 2-80
N3 Address Information
Optional Max: 2
N301 Address Information
M AN 1-55
N302 Address Information
O AN 1-55
N4 Geographic Location
Optional Max: 1
N401 City Name
O AN 2-30
N402 State or Province Code
C ID 2-2
N403 Postal Code
O ID 3-15
N404 Country Code
C ID 2-3
N405 Location Qualifier
C ID 1-2
N406 Location Identifier
O AN 1-30
TD1 Carrier Details (Quantity and Weight)
Optional Max: 2
TD101 Packaging Code
O AN 3-5
TD102 Lading Quantity
C N0 1-7
TD107 Weight
C R 1-10
TD108 Unit or Basis for Measurement Code
C ID 2-2
PO1 Loop Repeat: 100,000
PO1 Baseline Item Data
Optional Max: 1
PO101 Assigned Identification
O AN 1-20
PO102 Quantity Ordered
C R 1-15
PO103 Unit or Basis for Measurement Code
O ID 2-2
PO104 Unit Price
C R 1-17
PO106 Product/Service ID Qualifier
C ID 2-2
PO107 Product/Service ID
C AN 1-48
TD1 Carrier Details (Quantity and Weight)
Optional Max: 2
TD101 Packaging Code
O AN 3-5
TD102 Lading Quantity
C N0 1-7
TD107 Weight
C R 1-10
TD108 Unit or Basis for Measurement Code
C ID 2-2
TD5 Carrier Details (Routing Sequence/Transit Time)
Optional Max: 12
TD502 Identification Code Qualifier
C ID 1-2
TD503 Identification Code
C AN 2-80
TD504 Transportation Method/Type Code
C ID 1-2
TD505 Routing
C AN 1-35
ACK Loop Repeat: 104
ACK Line Item Acknowledgment
Optional Max: 1
ACK01 Line Item Status Code
M ID 2-2
ACK02 Quantity
C R 1-15
ACK03 Unit or Basis for Measurement Code
C ID 2-2
ACK04 Date/Time Qualifier
O ID 3-3
ACK05 Date
C DT 8-8
ACK07 Product/Service ID Qualifier
C ID 2-2
ACK08 Product/Service ID
C AN 1-48
ACK09 Product/Service ID Qualifier
C ID 2-2
ACK10 Product/Service ID
C AN 1-48
CTT Loop Repeat: 1
CTT Transaction Totals
Optional Max: 1
CTT01 Number of Line Items
M N0 1-6
AMT Monetary Amount
Optional Max: 1
AMT01 Amount Qualifier Code
M ID 1-3
AMT02 Monetary Amount
M R 1-18
SE Transaction Set Trailer
Mandatory Max: 1
SE01 Number of Included Segments
M N0 1-10
SE02 Transaction Set Control Number
M AN 4-9
How It Works

Automating Wayfair LLC EDI 855

Stacksync validates, transforms, and delivers your 855 transactions automatically — so your team can focus on operations, not EDI compliance.

Validate
Transform
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Stacksync generates and sends 855 Purchase Order Acknowledgments automatically when your system confirms an order. Accept, reject, or modify line items through your ERP — Stacksync handles the EDI formatting and transmission.

Wayfair LLC EDI 855 FAQ

Common questions about 855 Purchase Order Acknowledgment transactions with Wayfair LLC.

How quickly must I respond to a Wayfair LLC 850 with an EDI 855?

Wayfair LLC compliance programs generally require an EDI 855 Purchase Order Acknowledgment within 24 to 48 hours of receiving the 850. Some Wayfair LLC business units or time-sensitive product categories may have tighter windows. Failing to acknowledge within the deadline can result in compliance penalties, reduced scorecard ratings, and in some cases automatic PO cancellation. Stacksync can send 855 acknowledgments automatically the moment your system processes the incoming PO, well within Wayfair LLC's required timeframe. The platform logs every acknowledgment with timestamps for compliance auditing.

What status codes can be sent in a Wayfair LLC EDI 855?

The Wayfair LLC EDI 855 supports several acknowledgment status codes in the BAK and ACK segments: accepted as ordered (AC), accepted with changes (AD), backorder (BO), rejected (RJ), and item not found (IF). You can acknowledge the entire PO at the header level or respond line by line with different statuses — for example, accepting most items while backordering one and rejecting another. Stacksync lets you define business rules that automatically assign these status codes based on your inventory availability, pricing validation, and fulfillment capacity, removing the need for manual line-by-line review.

Is an EDI 855 required for every Wayfair LLC Purchase Order?

Most Wayfair LLC compliance programs require an 855 for every 850 PO received. However, some Wayfair LLC divisions or product categories may not enforce the requirement, especially for smaller suppliers or specific fulfillment models. Even when not strictly mandatory, sending an 855 is best practice — it confirms receipt, prevents duplicate PO transmissions, and establishes a clear audit trail. Stacksync configures 855 responses per Wayfair LLC business unit, so you can automate acknowledgments where required while handling exceptions for divisions with different compliance expectations.

What happens if I reject a line item in a Wayfair LLC EDI 855?

When you reject a line item in the Wayfair LLC 855 using the RJ status code, Wayfair LLC's ordering system is notified that you cannot fulfill that specific item. Depending on Wayfair LLC's policies, they may issue a revised 850 with alternative items, cancel the line, or source the product from another supplier. Partial rejections — where you accept some lines and reject others — are common and supported through line-level ACK segments. Stacksync tracks rejected lines and can trigger alerts so your sales or fulfillment team can follow up with Wayfair LLC proactively.

Can Stacksync automate Wayfair LLC EDI 855 responses?

Yes. Stacksync automates Wayfair LLC 855 responses by connecting to your inventory and order management systems. When a Wayfair LLC 850 arrives, Stacksync checks stock levels, validates pricing against your catalog, and confirms fulfillment capacity. Based on configurable business rules, it generates the appropriate 855 with acceptance, modification, or backorder status codes — all without manual intervention. You can set thresholds for automatic acceptance (e.g., accept if all items are in stock) and escalate edge cases to your team for review. The entire response cycle typically completes in under a minute.

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