Walmart Marketplace Orders API Adds isWCPOrder Field
Walmart updated the Marketplace Orders API and added the isWCPOrder field, affecting sellers and service providers that use the API. (Based on the summary)
What are the key facts?
- 1Walmart updated the Marketplace Orders API on October 2, 2026
- 2The API added the isWCPOrder field
- 3The change applies to sellers and service providers using the Walmart Marketplace API
What happened?
Walmart updated the Marketplace Orders API on October 2, 2026. The developer interface change added the isWCPOrder field to APIs related to Marketplace orders. The change applies to sellers and service providers using the Walmart Marketplace API and is an interface-level update. The original report categorized it as a developer interface change and noted that it was not sufficient to expand into multiple independent news items.
What does this mean for cross-border sellers?
The addition of the `isWCPOrder` field to Walmart’s Marketplace Orders API may require stores, ERPs, and service providers using the interface to adjust order-data retrieval and processing logic. If the change is not implemented, order classification, reporting, or downstream automation may encounter missing fields or inconsistent identification.
What should sellers do now?
- 1This week, review all stores, ERPs, and order reports connected to the Walmart Marketplace API. Confirm that the `isWCPOrder` field is being read and stored, and produce a list of affected interfaces, field mappings, and responsible owners.Listing character checker
- 2For automation workflows using Marketplace order data, add checks for null, true/false, and unknown values for the `isWCPOrder` field. Validate one order record in a test environment and retain the test results.