Walmart Marketplace Integration
Walmart integration built for zero-touch order operations
Connect your enterprise resource planning, warehouse management, storefront, and EDI systems to Walmart Marketplace in 21 days. Orders route automatically, inventory updates in real time, and your team stops touching data fields they never should have touched.
0M+
monthly Walmart shoppers
0 days
from scoping to go-live
0+
integrations delivered
Your Walmart integration at work
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
NetSuiteShopifyWMSEDI 850/856Dynamics 365
#WMT-5821046 → OMS routed
Live · 42s agoInventory feed → 847 SKUs synced
Updated · 3m agoAdvance ship notice → Walmart EDI
Sent · 8m ago
Merchant reviewing Walmart seller dashboard · typical go-live view after Sprint 1
The Cost of Manual Operations
Every hour your team processes Walmart orders manually is revenue your systems should already own
With Redefine integration
Orders auto-route to your order management system within 60 seconds of Walmart confirmation
Enterprise resource planning system updates in real time on every transaction: no manual entry
Inventory reserved the moment a Walmart order is placed
EDI 850, 856, 810, and 997 generated and transmitted automatically
Advance ship notice sent within minutes of carrier scan: Walmart compliance maintained
Returns trigger credit memos in your enterprise resource planning system automatically
Without integration
Download orders from Walmart Seller Center manually every few hours
Copy order data into your enterprise resource planning system or spreadsheet by hand
Inventory updated once daily: oversells and cancellations follow
EDI 850, 856, and 810 documents built and transmitted manually
Shipment confirmations submitted hours after carrier pickup
Returns processed in a separate workflow with no enterprise resource planning system sync
Walmart API Integration Architecture
Every data flow, mapped before a single line of code is written
Click any node to see how that system connects to Walmart Marketplace. Nodes also auto-advance every 4 seconds while this section is in view. No black-box middleware. No guesswork in your architecture.
Click any node to see data flow details
Walmart Marketplace
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.
API Versionv3 Marketplace API
Auth MethodOAuth 2.0
Connection Status• Live
Last SyncJust now
Orders API
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.
#WMT-5821046Routed to OMS
#WMT-5821039ERP synced
#WMT-5821017Advance ship notice sent
Inventory API
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.
SKU-4410-BLK-M84 available
SKU-4410-WHT-L12 available
SKU-4410-NVY-S0: suppressed
EDI Network
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.
850: Purchase Order ReceiptAcknowledgment 997 sent
856: Advance Ship NoticeTransmitted
810: InvoiceQueued
ERP System
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.
SO-20481$147.50: Fulfilling
SO-20479$89.00: Shipped
SO-20477$312.00: Invoiced
WMS / Inventory
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.
Location: Zone A-12Pick confirmed
Reserve held26 units
Advance ship notice triggeredAuto-sent
Storefront
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.
Active listings1,247
Last price update6 min ago
Pending sync14 stock keeping units queued
Integration Architecture
Built on a three-tier architecture that never misses an event
Every Walmart integration runs through a message-queue layer that buffers, transforms, and routes events. Transient API failures do not lose orders. Every event is logged, retried, and confirmed before it closes.
System architecture
Data Sources
ERP
WMS
Storefront
EDI Gateway
Redefine Integration Layer
Message Queue
Transform
Monitor
Walmart APIs
Marketplace API v3
Inventory Feed
Drop Ship Vendor API
Returns API
Live integration events
Live
ORDER#WMT-5821047 received, routed to order management system in 0.4s
INVENTORYSKU-4410-BLK-M quantity updated: 84 to 83
EDI856 advance ship notice transmitted for purchase order 881204
ORDER#WMT-5821044 shipped, tracking pushed to Walmart
RETURNReturn authorization 291 approved, credit memo created in enterprise resource planning system
EDI850 purchase order 881219 acknowledged (997 sent)
Events today3,847
Error rate0.0%
Walmart Ecommerce Integration Capabilities
Everything your Walmart deployment needs, built into one engagement
Each capability ships as a working, monitored integration, not a configuration guide you hand to an in-house developer.
Marketplace Order Sync
Orders confirmed on Walmart Marketplace route to your order management system within 60 seconds. Your enterprise resource planning system receives the sale record, your warehouse management system receives the pick instruction, and your fulfillment team works from a single queue. No toggling between systems. No manual routing decisions.
Order routingERP syncOMS integrationFulfillment triggers
EDI Automation
EDI 850, 856, 810, and 997 generated and transmitted without manual steps. Retransmission on error. Compliance maintained without an EDI specialist on staff.
Walmart API Integration
Direct API connections to Walmart Marketplace v3, Inventory Feed, Drop Ship Vendor, Pricing, and Returns. OAuth-managed authentication. Version change monitoring included.
Inventory Feed Management
Location-level quantity pushes to Walmart in real time from your warehouse management system or enterprise resource planning system. Listings suppressed automatically when stock hits zero. No oversells, no manual updates.
Returns and Credits
Walmart return authorizations flow back to your enterprise resource planning system automatically. Credit memos created, inventory restocked, and customer records updated: all without a human in the loop.
One Walmart integration, every system your operations touch
Orders, EDI, inventory, returns, and storefront sync: scoped line-by-line before build starts.
Integration Proof
Multi-channel integration, delivered without disruption
Client
Forloh
Outdoor Apparel / Direct-to-ConsumerPremium 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 problem
Manual processes across multiple sales channels created limited efficiency and operational friction. Inventory and customer data required consistent synchronization across platforms, but the connections did not exist. Ongoing technical support was insufficient to maintain reliable cross-platform data flow as order volumes grew.
The result
0
platforms unified through automated integration
A secure integration framework connected Shopify, Amazon, and supporting applications, ensuring reliable data synchronization. Key processes were automated to reduce manual workload and minimize errors across inventory and customer data. System reliability improved significantly, enabling smoother operations and better decision-making across all connected channels.
Why Redefine
What separates a platform-specific integration from a generic 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 |
Common Questions
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, then produce a line-by-line proposal within 3 business days. There is no commitment to receive the proposal. Pricing is based on scope, not a fixed package rate. Submit your brief to start.
Fit Check
Is this the right engagement for your business?
Good fit
You sell or plan to sell on Walmart Marketplace
You have an enterprise resource planning, order management, or warehouse management system that needs to sync with Walmart
Your team currently processes Walmart orders or EDI documents manually
You need a Walmart Drop Ship Vendor or supplier program set up end to end
You are adding Walmart alongside an existing Shopify, BigCommerce, or NetSuite stack
Probably not a fit
You are just starting ecommerce and have no existing systems to connect
You need a pre-built software-as-a-service connector with no customization
You have fewer than 50 monthly Walmart orders and manual processing is workable
Your team has not yet been approved as a Walmart Marketplace seller
Not sure? Tell us your situation and we will be straight with you.
Get Your Integration Blueprint
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. No commitment required.
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.
Response within 48 hours
Line-by-line proposal in 3 days
40+ integrations delivered
You own all integration code