Walmart

This is for Walmart US Marketplace API

Walmart API Changelog Monitoring

Walmart Marketplace integrations rely on steady awareness of catalog, order, fulfillment, and seller platform changes. This Walmart API Changelog Monitoring page keeps those updates visible so you can track release notes that may affect listing flows, order syncs, or marketplace operations.

Reliable Walmart API Changelog Monitoring makes it easier to stay ahead of marketplace adjustments that could affect order sync, fulfillment logic, or catalog data. Instead of checking multiple sources manually, your team gets a clearer monitoring workflow around each new changelog entry.

The benefit of Walmart API Changelog Monitoring is simple: your team gets a repeatable way to watch changes, evaluate risk, and act before small upstream updates turn into customer-facing bugs. This is for Walmart US Marketplace API

Walmart API down?

Walmart API down? Soon we will add direct API status monitoring alongside Walmart API Changelog Monitoring. For now, go to the official developer or platform status pages on the Walmart website. In the future, we plan to detect outages or degradations even before the public status page is updated.

Recent changes

Showing the last 10 changes from this feed.

04-03-2026

April 2, 2026 release

April 2, 2026 release APIChange TypeRelease DateDescriptionOrdersAdded03/19/2026Added optional response property miscAttributes in: GET /v3/orders (200) GET /v3/orders/released (200) GET /v3/orders/{purchaseOrderId} (200) POST /v3/orders/{purchaseOrderId}/acknowledge (200) POST /v3/orders/{purchaseOrderId}/cancel (200) POST /v3/orders/{purchaseOrderId}/refund (200) POST /v3/orders/{purchaseOrderId}/shipping (200)Ship With WalmartChanged03/19/2026Request properties deliverByDate and shipByDate became optional in: POST /v3/shipping/labels/shipping-estimates (Feed generated with FetchRSS)

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04-03-2026

February 26, 2026 release

February 26, 2026 release APIChange TypeRelease DateDescriptionOrdersAdded02/26/2026Added optional header parameter WM_SANDBOX in GET /v3/orders.OrdersAdded02/26/2026Added optional header parameter WM_SANDBOX in GET /v3/orders/released.OrdersAdded02/26/2026Added optional header parameter WM_SANDBOX in GET /v3/orders/{purchaseOrderId}.OrdersAdded02/26/2026Added optional header parameter WM_SANDBOX in POST /v3/orders/{purchaseOrderId}/acknowledge.OrdersAdded02/26/2026Added optional header parameter WM_SANDBOX in POST /v3/orders/{purchaseOrderId}/cancel.OrdersAdded02/26/2026Added optional header parameter WM_SANDBOX in POST /v3/orders/{purchaseOrderId}/shipping. (Feed generated with FetchRSS)

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04-03-2026

March 19, 2026 release

March 19, 2026 release APIChange TypeRelease DateDescription***Overhauled03/18/2026Revamped the Help and Support hub with improved navigation, troubleshooting resources, API status visibility, support contacts, and onboarding guidance.***Added03/18/2026Added a new API deprecation guide that defines legacy, deprecated, and sunset statuses, outlines the API lifecycle, and provides migration guidance for supported APIs. (Feed generated with FetchRSS)

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04-03-2026

March 26, 2026 release

March 26, 2026 release APIChange TypeRelease DateDescriptionFulfillmentBreaking03/12/2026Removed enum value ENRICHMENT_FAILED_GDM from query parameter status in GET /v3/fulfillment/inbound-shipments.FulfillmentBreaking03/12/2026Removed enum value FAILED_AND_CANCELED from query parameter status in GET /v3/fulfillment/inbound-shipments.FulfillmentBreaking03/12/2026Removed enum value FINALIZED from query parameter status in GET /v3/fulfillment/inbound-shipments. (Feed generated with FetchRSS)

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04-03-2026

March 5, 2026 release

March 5, 2026 release APIChange TypeRelease DateDescriptionOrdersAdded03/05/2026Added enum value USPS First Class Mail to response property .../trackingInfo/carrierName/carrier in - GET /v3/orders (200), - GET /v3/orders/released (200), - GET /v3/orders/{purchaseOrderId} (200), - POST /v3/orders/{purchaseOrderId}/acknowledge (200), - POST /v3/orders/{purchaseOrderId}/cancel (200), - POST /v3/orders/{purchaseOrderId}/refund (200), and - POST /v3/orders/{purchaseOrderId}/shipping (200).OrdersAdded03/05/2026Added enum value USPS First Class Mail to request property orderShipment/.../trackingInfo/carrierName/carrier in POST /v3/orders/{purchaseOrderId}/shipping. (Feed generated with FetchRSS)

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02-18-2026

February 18, 2026

February 18, 2026 APIChange TypeRelease DateDescriptionMarketplace Sandbox APIAdded02/18/2026ADDED a new API group, Simulations, with the following six endpoints: - POST /v1/simulations/items - GET /v1/simulations/items - PUT /v1/simulations/items/{sku} - GET /v1/simulations/items/{sku} - POST /v1/simulations/orders - DELETE /v1/v1/simulations/orders/{purchaseOrderId}/deliver (Feed generated with FetchRSS)

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02-12-2026

February 12, 2026

February 12, 2026 APIChange TypeRelease DateDescriptionFulfillmentRemoved02/06/2026Removed request property payload/sellerOrderId in POST /v3/fulfillment/orders-fulfillments.Assortment RecommendationsAdded02/09/2026Added optional request property filterCriteria/isNewRecommendation in POST /v3/growth/assortment/recommendations.Assortment RecommendationsAdded02/09/2026Added optional request property filterCriteria/isTopGoGetItem in POST /v3/growth/assortment/recommendations.Assortment RecommendationsAdded02/09/2026Added optional response property payload/records/items/itemDetails/isTopGoGetItem in POST /v3/growth/assortment/recommendations (200).Assortment RecommendationsAdded02/09/2026Added optional request property filterCriteria/isNewRecommendation in PUT /v3/growth/assortment/recommendations/rejections.Assortment RecommendationsAdded02/09/2026Added optional request property filterCriteria/isTopGoGetItem in PUT /v3/growth/assortment/recommendations/rejections.Assortment RecommendationsAdded02/09/2026Added optional response property payload/records/items/itemDetails/isTopGoGetItem in GET /v3/growth/assortment/recommendations/variants (200). (Feed generated with FetchRSS)

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