Validation Preview mode error code changes in the Listings Items API
Starting January 15 2025 Amazon will return refreshed error identifiers such as NEW_MISSING_ATTRIBUTE in the Listings Items API Validation Preview mode. Legacy codes like MISSING_ATTRIBUTE may still appear, so integrations must recognize both sets during the migration.
The Validation Preview mode of the Listings Items API now returns updated error codes in validation responses. You can use these updated error codes to receive more comprehensive and accurate validation feedback when validating listings. This change affects only the Validation Preview mode ( mode=VA...
Analysis & Recommendations
Why This Matters
Third‑party bulk upload and custom listing scripts rely on the issues array to stop bad drafts. If they miss the new codes, listings will be submitted and later rejected, causing delays and potential policy violations.
Key Takeaways
- New identifiers (e.g., NEW_MISSING_ATTRIBUTE) replace legacy codes in the issues array when mode=VALIDATION_PREVIEW is used.
- Both old and new codes can appear together during an undefined transition period, e.g., NEW_INVALID_PRICE alongside INVALID_PRICE.
- The change becomes effective on January 15 2025, but Amazon has not set a hard deprecation deadline for the legacy identifiers.
- Standard API calls without the preview flag continue to return the original error codes unchanged.
Recommended Actions
- →Update your error‑handling mapping table in your integration repository to include NEW_MISSING_ATTRIBUTE, NEW_INVALID_FORMAT, NEW_INVALID_PRICE, ma...
- →Run Validation Preview tests in the SP‑API sandbox or via Postman with mode=VALIDATION_PREVIEW and log any unknown codes to verify your parser catc...
- →Add the new codes to your user‑facing message catalog in your platform’s UI translation files or Seller Central custom tool settings so sellers see...
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