Amazon Walmart Integration
Nventory keeps inventory counts accurate across Amazon and Walmart by syncing stock levels and importing orders from both marketplaces into one dashboard. Nventory pushes tracking numbers back to each channel automatically after fulfillment.
Sync Matrix
6 data entities in the sync matrix — 2 bidirectional, 4 one-way. Tap any row for details.
Good to Know
Platform restrictions outside any integration tool's control
Both Amazon and Walmart own the customer relationship. Buyer information is anonymized and cannot be exported or shared between marketplaces.
Walmart's Minimum Advertised Price policies are enforced within Walmart Seller Center. Nventory does not manage or override marketplace pricing rules.
Amazon does not expose real-time Buy Box assignment via API. Nventory keeps inventory accurate but cannot guarantee or influence Buy Box placement.
Inbound shipment plans for Walmart Fulfillment Services must be created in Walmart Seller Center. Nventory tracks WFS stock levels but does not create inbound shipments.
Things to Consider
Platform-specific details and how they affect this integration.
FBA stock sits in Amazon warehouses and is only directly sellable on Amazon. WFS stock sits in Walmart fulfillment centers and is only directly sellable on Walmart. This creates two physically separate inventory pools alongside your merchant warehouse, requiring coordinated allocation to avoid phantom availability on either platform.
Nventory maintains separate pool tracking for FBA, WFS, and merchant warehouse stock. Amazon availability includes FBA and FBM quantities; Walmart availability includes WFS and seller-fulfilled quantities. Restock alerts trigger independently for each fulfillment network.
Who Uses Amazon Walmart Integration
Common scenarios for connecting Amazon and Walmart.
How It Works
Nventory sits between your platforms and keeps everything in sync.
Authenticate Seller Accounts
Connect your Amazon Seller Central and Walmart Seller Center accounts through secure API credentials. Nventory validates access to inventory, orders, and catalog endpoints.
Reconcile Product Catalogs
Nventory maps Amazon ASINs to Walmart item IDs using shared SKUs, UPCs, or GTINs. Mismatches are flagged for manual review.
Configure Stock Allocation
Decide how to split inventory between Amazon and Walmart. Reserve units for Walmart+ promotions or Amazon Prime Day events independently.
Activate Continuous Sync
Orders, inventory adjustments, and tracking updates flow through Nventory between both marketplaces in real time. Alerts fire if sync latency exceeds thresholds.
Frequently Asked Questions
Yes. Nventory tracks WFS on-hand and available quantities alongside your FBA inventory, giving you a complete picture of stock across both fulfillment networks.
Absolutely. You can set percentage-based splits, fixed reserves, or velocity-based dynamic allocation to ensure your best-performing channel always has sufficient stock.
Nventory maps products using SKUs, UPCs, GTINs, or manual overrides. Once mapped, a single inventory pool can serve both marketplace listings without duplication.
Syncing actually improves your metrics. By preventing overselling, your cancellation rate drops, your on-time shipping rate improves, and your Walmart Pro Seller status stays protected.
Inventory updates propagate within seconds of an order event on either marketplace. Nventory uses high-frequency API polling against both Amazon SP-API and Walmart Marketplace APIs to detect sales, and pushes stock adjustments to the other platform in near real-time even during peak events like Prime Day or Walmart+ Week.
Nventory maintains configurable safety stock buffers per marketplace so the true last unit is never exposed to both channels at once. If a race condition occurs, Nventory's conflict resolution immediately flags the duplicate sale, letting you cancel the later order before it ships and protecting your Walmart seller scorecard and Amazon account health metrics.
First, verify that Walmart's API rate limits have not been exceeded — Walmart throttles order retrieval during peak periods and may return incomplete results. Then confirm that order status mappings are correct, since Amazon and Walmart use different status labels for stages like 'Acknowledged' vs 'Created.' Finally, check that fulfillment method differences (FBA vs WFS vs seller-fulfilled) are not causing orders to route to the wrong sync pipeline in Nventory.
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