Update: January updates to listing attribute usage and enumeration values
Effective January 26 2026 Amazon will make attributes like batteryCapacity, materialType and seasonality mandatory for categories such as portable power banks, men’s outerwear and wooden toys. The Listings Items API and JSON_LISTINGS_FEED payloads must include these fields and the expanded enumeration values (e.g., “neon green”, “24‑month extended”) or listings will be rejected.
Effective January 26, 2026 , Amazon will update the attribute usage and enumeration values of numerous product types across marketplaces. For a complete list of metadata changes and affected marketplaces, refer to SP-API product metadata changes . Who is affected? Both private and public developers ...
Analysis & Recommendations
Why This Matters
Developers must modify their API requests and feed files before the Jan 26 2026 deadline or face MissingRequiredAttribute errors that stop products from appearing on Amazon. Adding precise attributes and new dropdown options also improves search relevance and reduces future rejections.
Key Takeaways
- The new rules become compulsory on Jan 26 2026 for offer‑based listings via Listings Items API and JSON_LISTINGS_FEED.
- Mandatory attributes added include batteryCapacity (value/unit), materialType, and seasonality for specific categories.
- Enumeration lists are expanded to include options like “neon green”, “midnight blue”, and “24‑month extended” for color and warrantyPeriod.
- Missing any required attribute will trigger a “MissingRequiredAttribute” error and cause the listing to be rejected.
Recommended Actions
- →Check Seller Central > Developer Central > SP‑API product metadata change log to identify impacted categories.
- →Update your integration code’s JSON schema to add fields such as batteryCapacity, materialType, seasonality and select the new enumeration values.
- →Run a validation using the ValidateFeed API or sandbox environment and submit the corrected feed before Jan 26 2026.
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