Overview

Amazon has begun enforcing mandatory color‑name or size‑name attributes for new listings in several categories, including socks, vests, backpacks, keyrings, and aprons. The rule takes effect immediately; any submission lacking the required attribute will be rejected during validation. Sellers with inactive or suppressed listings in these categories must add the missing data before the items can be re‑activated, while existing live listings remain unaffected for now.

Key Points

• Color attribute required for socks, vests, backpacks, keyrings — New listings must contain a valid color name such as “navy” or “emerald” or the submission is blocked.
• Size attribute required for aprons — A proper size label (e.g., “One‑Size” or “Large”) is now mandatory for apron listings.
• Invalid submissions are rejected outright — Listings that omit the required field fail Amazon’s validation check and never enter the catalog.
• Dormant listings need updates — Suppressed or inactive ASINs in the affected categories must be edited to include the new attributes before they can be re‑listed.
• Bulk‑upload and API feeds are subject to the same rule — Whether you use flat‑file templates, third‑party listing tools, or the SP‑API, the attribute must be present and correctly mapped.

How the New Attribute Validation Works

1. Submission check — When a seller creates a new product entry, Amazon’s system scans the payload for the required attribute.
   • Example: A vendor uploads a backpack listing with the fields “Brand: TrekGear” and “Material: Nylon” but leaves the color field blank. The system flags the entry and returns an error code indicating a missing color attribute.
2. Attribute verification — The value supplied must match one of Amazon’s accepted color or size terms for that product type.
   • Example: A seller lists “Socks – Color: Blu” (misspelled). Amazon’s validator rejects the entry because “Blu” is not an approved term; the correct term would be “Blue.”