Walmart Releases New Item Spec 5.0 Version
Walmart announced Item spec 5.0, covering the MP_ITEM, MP_MAINTENANCE, MP_WFS_ITEM, and OMNI_WFS data streams.
What are the key facts?
- 1Walmart announced the new Item spec 5.0 version on October 15
- 2New version: 5.0.20260829-12_49_39-api
- 3Applies to four data streams
- 4Primarily affects cross-border sellers and software service providers using APIs or batch Feeds
- 5The old schema may cause Feed errors or unsellable items
What happened?
Walmart announced a new version of Item spec 5.0 on October 15, version 5.0.20260829-12_49_39-api. The version applies to four data streams: MP_ITEM, MP_MAINTENANCE, MP_WFS_ITEM, and OMNI_WFS. These cover standard Marketplace item creation, maintenance of existing items, WFS item creation, and inventory management through the Omni WFS process. The changes primarily affect cross-border sellers and software service providers that upload products through APIs or batch Feeds. Sellers who manually edit individual items are likely to see limited short-term impact, but should still monitor whether Seller Center gradually switches to new fields. Sellers should download the latest specification and diff report and compare them with the previous version, focusing on condition fields, product types, required fields, and permitted values. Continuing to use the old schema could result in partially successful and partially failed Feeds, or cause item statuses to be set to unsellable by the system.
What does this mean for cross-border sellers?
Walmart Item spec 5.0 now covers the MP_ITEM, MP_MAINTENANCE, MP_WFS_ITEM, and OMNI_WFS data streams. Cross-border sellers using APIs or batch Feeds need to review their upload specifications. Continuing to use the old schema may result in partially successful and partially failed Feeds or items being marked unsellable. Sellers manually editing individual items are likely to see limited short-term impact but should monitor Seller Center field changes.
What should sellers do now?
- 1Download Item spec 5.0 and the diff report this week. Compare the old schema across MP_ITEM, MP_MAINTENANCE, MP_WFS_ITEM, and OMNI_WFS, and produce a differences list covering condition fields, product types, required fields, and permitted values.Listing character checker
- 2Review Walmart API or batch Feed item templates and synchronize the fields and permitted values in the differences list with the creation, maintenance, and WFS inventory workflows. Treat completion of template updates for all four data streams as the acceptance criterion.
- 3Use the updated schema to run Feed tests for items. Check for partially successful or partially failed submissions and unsellable statuses, save the submission results and exception records, and prepare the pre-launch review output.