Walmart Marketplace integration that moves orders, inventory, and EDI without your team touching a field
Connect your ERP, WMS, storefront, and EDI systems to Walmart Marketplace in 21 days. Orders route automatically. Inventory updates in real time. Your team stops re-keying data between systems.
Orders route to your order management system in under 60 seconds — the same pipeline your connector runs after Sprint 1 goes live.
Connects to your stack
Every manual Walmart order costs your team time, accuracy, and margin
We map every data flow before we write a single line of code
No black-box middleware. No guesswork in your architecture. Every connection between your systems and Walmart is visible, documented, and yours to audit. Click any node below to see how that system connects.
Click any node to see data flow details
The hub for all buyer transactions
Your integration connects directly to the Walmart Marketplace API to receive orders, push inventory, and confirm fulfillments. All events are processed in real time: no polling delays.
New orders arrive in under 60 seconds
Our integration polls Walmart's Orders API, transforms the payload to your order management system format, and routes to your fulfillment workflow: without manual intervention at any step.
Inventory reserved the moment an order is placed
Location-level quantity feeds from your warehouse management system push to Walmart in real time. Oversells become a problem you no longer manage: the system prevents them before they happen.
EDI 850, 856, 810, 997: fully automated
For Walmart supplier and drop-ship vendor programs, all standard EDI document types are generated, validated, and transmitted without manual steps, and retransmitted automatically on error.
Your order-of-record, updated automatically
We map Walmart order payloads to your enterprise resource planning system's native format: NetSuite, Microsoft Dynamics 365, SAP, or custom. Orders, credits, returns, and shipments flow both directions without manual touchpoints.
Real-time quantity prevents every oversell
Your warehouse management system becomes the single source of truth for all Walmart inventory feeds. Pick and pack confirmations trigger advance ship notice generation immediately: no manual step between your dock and Walmart's system.
Listing content managed from your system of record
If you run Shopify, BigCommerce, or a custom storefront alongside Walmart, your product catalog, pricing, and promotions publish from one source. No duplicate maintenance in Walmart Seller Center.
Built on architecture that catches every event and loses zero orders
Every Walmart integration runs through a buffer layer that catches, transforms, and routes events. When Walmart's API has a hiccup, your orders still arrive. Every event is logged, retried, and confirmed before it closes.
System architecture
Data Sources
Redefine Integration Layer
Walmart APIs
Live integration events
Everything your Walmart launch needs, built into one project
Every feature goes live as a working, monitored integration. Not a configuration guide you hand to an in-house developer.
Marketplace 21-Day Go-Live -- Redefine
Walmart orders route to your OMS within 60 seconds of confirmation. Your ERP gets the sale record. Your WMS gets the pick instruction. Your fulfillment team works from one queue. No toggling between systems. No manual routing.
Walmart EDI Integration
EDI 850, 856, 810, and 997 generated and transmitted without manual steps. Failed transmissions retry automatically. Walmart compliance stays current without an EDI specialist on your payroll.
Walmart API Integration
Direct API connections to Walmart Marketplace v3, Inventory Feed, Drop Ship Vendor, Pricing, and Returns. Authentication runs through OAuth and stays current automatically. When Walmart updates their API, your integration updates with it.
Inventory Feed Management
Location-level quantities push to Walmart in real time from your WMS or ERP. Listings suppress automatically when stock hits zero. No oversells. No manual updates.
Returns and Credits
Walmart return authorizations flow back to your ERP automatically. Credit memos created, inventory restocked, customer records updated. No one on your team touches any of it.
Walmart and marketplace integration, live without disrupting operations
Premium outdoor apparel brand selling direct-to-consumer and through marketplace channels. Required seamless integration between Shopify, Amazon, and supporting applications while maintaining data accuracy and security across all platforms.
The team managed orders across Shopify, Amazon, and supporting platforms by hand. Inventory counts drifted between channels. Customer data lived in separate systems with no sync. As order volume grew, the manual approach broke.
platforms unified through automated integration
We connected Shopify, Amazon, and supporting applications into one integration framework. Inventory and customer data now sync automatically across all channels. The team eliminated manual data entry, reduced errors, and gained a single source of truth for every order.
What separates a custom-built integration from an off-the-shelf connector
Most integration vendors publish broad capability lists. We publish working architectures. The comparison below shows where that difference shows up in practice.
| Capability | Typical integration vendor | Redefine |
|---|---|---|
| Walmart Marketplace API v3 connection | Connector template | Custom-built per client |
| Real-time inventory sync | Batch or polling | Event-driven, real-time |
| EDI 850, 856, 810, 997 automation | Separate EDI tool required | Included in scope |
| ERP data mapping and field customization | Fixed schema only | Custom mapped to your ERP |
| Error handling and automatic retry | Manual error review | Automated retry and alerting |
| Walmart Drop Ship Vendor program support | Not covered | Fully supported |
| API version monitoring and update management | Client responsibility | Managed proactively |
Your Walmart integration questions, answered
Most Walmart marketplace integrations go live within 21 days of project kick-off. Discovery and architecture design take approximately 5 days, build and configuration runs from days 6 to 14, and testing and validation complete within 3 to 4 days before go-live. Timeline depends on the complexity of the connected systems and the number of data flows required.
We integrate Walmart Marketplace with enterprise resource planning platforms including NetSuite, Microsoft Dynamics 365, and SAP, warehouse management systems, order management platforms, and ecommerce storefronts including Shopify and BigCommerce. We also build EDI connections for Walmart supplier programs including 850, 856, 810, and 997 document types.
Yes. Our EDI integration service covers all standard document types required for Walmart supplier programs and drop-ship vendor arrangements. EDI 850 purchase orders, 856 advance ship notices, 810 invoices, and 997 acknowledgments are fully automated so your team no longer processes them manually.
Our integrations include monitoring and maintenance as part of the engagement scope. When Walmart releases API changes, we assess the impact and deploy updates before they cause disruptions. You receive advance notice of any planned changes and a tested update before the API version is deprecated.
Yes. We have delivered Walmart integrations with both NetSuite and Microsoft Dynamics 365. The integration maps Walmart order payloads to your enterprise resource planning system's native order format, syncs inventory quantities in real time, routes shipment confirmations back to Walmart automatically, and handles returns and credit memo generation.
Every Walmart integration is scoped before work starts. We review your current systems, data volumes, EDI requirements, and workflow complexity. You receive a line-by-line proposal within 3 business days. The proposal is free and comes with zero commitment. Pricing is based on scope, not a fixed package rate. Submit your brief to start.
Your Walmart integration blueprint, ready in 3 days
Tell us which systems you need to connect to Walmart Marketplace. We will review your setup and return a scoped proposal within 3 business days. Free. No commitment. No sales pitch.
No commitment. No pitch. Just a specific, line-by-line proposal for your integration.
Call within 48 hours → proposal in 3 days → Sprint 1 within 1 week of sign-off
Brief received
We will review your Walmart integration setup and send a scoped, line-by-line proposal within 3 business days.