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Walmart EDI
across every channel.

Stacksync wires the full Walmart trading-partner footprint, Walmart US (Goods for Resale), Walmart Canada, Sam's Club, Walmart (Goods Not For Resale), Walmart Produce Traceability (PTI), Walmart Drop Ship Vendor via SPS, Valued Walmart Import Suppliers, Walmart.com via Mercury Gate, into your ERP, WMS, or warehouse from one workspace.

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Document types
32
X12 + EDIFACT
Channels
8
Walmart US (Goods for Resale) → Walmart.com via Mercury Gate
Go-live median
5d
Across 240+ Walmart suppliers

Adopted by fast-scaling companies moving mission-critical data in real time

Case study
Migrated from MuleSoft
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Migrated from Celigo
Migrated from Heroku Connect
Migrated from Matillion
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Migrated from Fivetran
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Migrated from Celigo

Document catalog

EDI documents we support for Walmart

32 transactions across 8 channels.

Document flow

How EDI documents flow with Walmart

Where each document sits in its trading cycle, based on the 13 document types Walmart trades across 8 channels.

Catalog & inventory

Partial cycle
  1. 832 Price / Sales Catalog not required by Walmart
  2. 846 Inventory Inquiry Advice
  3. 852 Product Activity Data not required by Walmart
  • 204 Motor Carrier Load Tender — runs on 1 of Walmart's 8 channels
  • 210 Motor Carrier Freight Details And Invoice — runs on 1 of Walmart's 8 channels
  • 214 Transportation Carrier Shipment Status Message — runs on 1 of Walmart's 8 channels
  • 810 Invoice — runs on 5 of Walmart's 8 channels
  • 816 Organizational Relationships — runs on 1 of Walmart's 8 channels
  • 824 Application Advice — runs on 4 of Walmart's 8 channels
  • 846 Inventory Inquiry Advice — runs on 1 of Walmart's 8 channels
  • 850 Purchase Order — runs on 6 of Walmart's 8 channels
  • 855 Purchase Order Acknowledgment — runs on 3 of Walmart's 8 channels
  • 856 Ship Notice Manifest — runs on 5 of Walmart's 8 channels
  • 860 Purchase Order Change Request Buyer Initiated — runs on 1 of Walmart's 8 channels
  • 864 Text Message — runs on 2 of Walmart's 8 channels

Network context

Walmart trades through SPS Commerce and MercuryGate

EDI traffic with Walmart is routed over these networks. Stacksync maintains certified connections to each, so one integration covers every partner reachable on them.

SPS Commerce

94 channels · 74 trading partners on Stacksync

SPS Commerce operates a full-service retail EDI network that the company describes as the world's largest, citing more than 1,000,000 connections and 4,000-plus retailers and distributors. Retailers route supplier compliance programs through SPS, which tests and certifies each supplier connection on the retailer's behalf. Traffic centers on retail order-to-cash documents: purchase orders (850), invoices (810), advance ship notices (856), acknowledgments (855), order changes (860), and inventory advice (846).

Walmart channel on this network: Walmart Drop Ship Vendor via SPS

Most-traded documents
  • 850 92 ch
  • 810 91 ch
  • 856 90 ch
  • 855 87 ch
  • 860 56 ch
Also reachable via SPS Commerce

MercuryGate

35 channels · 26 trading partners on Stacksync

MercuryGate is a multimodal transportation management system used by shippers, brokers, and 3PLs; after Korber Supply Chain Software acquired it in August 2024 and rebranded in 2025, it is marketed as Infios Transportation Management. It is a TMS endpoint rather than a VAN: carriers integrate with the instance a shipper or 3PL operates. These channels carry tendering and settlement documents: load tenders out to the carrier, with tender responses, shipment statuses, and freight invoices (204, 990, 214, 210) returned.

Walmart channel on this network: Walmart.com via Mercury Gate

Most-traded documents
  • 204 35 ch
  • 214 35 ch
  • 990 35 ch
  • 210 24 ch
Also reachable via MercuryGate

How it works

Three steps to live Walmart EDI.

Stacksync handles the complexity of Walmart EDI so your team doesn't have to. Connect your ERP, WMS, or database through a simple API, we translate, validate, and deliver every transaction automatically.

  1. 01

    Connect your systems

    Plug Stacksync into your ERP, WMS, or database with a no-code connector. We handle authentication, schema discovery, and field mapping.

  2. 02

    Map to Walmart guidelines

    We ship pre-built mappings for every Walmart document type. Override any field, add custom validation, or extend with custom code.

  3. 03

    Send & receive in real time

    Stacksync translates, validates, and delivers every transaction over AS2, SFTP, or API. Watch every document flow live in the dashboard.

Why Stacksync

Built for EDI suppliers, not enterprise legacy.

From pre-built Walmart mappings to real-time compliance checks, Stacksync removes the friction from EDI, so you can focus on growing your business.

  • Pre-built mappings

    Stacksync ships native mappings for every Walmart document type. No more 6-week field-mapping projects.

  • Real-time monitoring

    Every transaction shows up in the dashboard the second it lands, with retry, revert, and replay built in.

  • No vendor lock-in

    Your data lives in your ERP/WMS/database. Stacksync is the translation layer, not the system of record.

  • Days, not months

    Most Walmart suppliers go live in under a week. We migrate from SPS Commerce, TrueCommerce, Cleo and IBM Sterling.

LEGACY EDI MIGRATION FUND

Still with a legacy EDI vendor? We cover the buyout.

Stacksync buys back your current contract with SPS Commerce, Cleo, TrueCommerce, or OpenText. No migration cost, no overlap billing.

Check your eligibility for the EDI migration fund
Migrate from SPS Commerce
Migrate from Cleo
Migrate from TrueCommerce
Migrate from OpenText
SECURITY

Security teams trust Stacksync

As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.

Learn more about security
SOC 2 Type II
ISO 27001
HIPAA BAA
GDPR
CCPA
DPF US-EU-UK-CH
→ SECURITY WITH BENEFITS

SSO & SCIM

Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.

Alerts

Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.

Secure connection options

Securely connects to your systems with:

OAuth 2 SSH Tunnelling SSL certificates IP Whitelisting VPN gateway VPC peering and more

Trading partners

5,000+ 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.

E2open, LLC John Deere Costco Ryder The Home Depot Kleinschmidt Mercury Gate Dillard's Department Stores, Inc. Nordstrom JCPenney CVS Amazon Target Saks Fifth Avenue & Saks OFF 5th NEXCOM (Navy Exchange Service Command) Sprouts Farmers Market Ulta Beauty Macy's Master Electronics Aldi GovX Inc.
Browse the full directory

FAQ

Walmart EDI questions

How long does it take to set up Walmart EDI with Stacksync?

Most suppliers are fully connected and processing live Walmart EDI transactions within 3–5 business days. Stacksync's no-code setup means you don't need developers or EDI consultants — configure your field mappings through our visual interface, run a test cycle, and go live.

What is Walmart EDI?

Walmart accepts EDI for 13 document types across 8 channels. Trading partners use EDI to exchange purchase orders, invoices, shipping notices, and acknowledgements with Walmart programmatically, Stacksync handles the entire EDI exchange, validation, and translation into your ERP, WMS, or database.

Which EDI standards does Walmart use?

Walmart uses X12. Stacksync supports both X12 (the dominant North American standard) and EDIFACT (the dominant European and global shipping standard) for every connected trading partner. Channel-specific implementation guidelines from Walmart are pre-built into the Stacksync connector and validated on every outbound transaction.

Which transaction codes does Walmart support?

Walmart supports 13 transaction codes in total. The most common include: 824, 856, 864, 855, 810, 850, 816, 860. Each code is mapped to its business-record equivalent (purchase order, ASN, invoice, etc.) inside Stacksync, so EDI exchanges land directly in your ERP or warehouse without manual translation.

How long does Walmart EDI integration take with Stacksync?

Most Walmart EDI integrations go live in 3 to 10 business days. The Stacksync team handles partner enrolment, channel certification, transaction-set mapping per Walmart's implementation guide, and end-to-end testing. Complex multi-channel deployments or custom transaction sets take 2 to 4 weeks. Cutover is zero-downtime and parallel-run validated.

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