#gtin

Google Merchant Center Product Feed Attribute Repair Planner: GTIN MPN Brand Rules, Image Requirements, Shipping Attributes, and a Supplemental Feed Patch Sheet

Turn Merchant Center product feed rejections into a repair plan: fix GTIN, MPN, and brand identity rules, image policy failures, shipping and return attributes, then produce a supplemental feed patch sheet merchandisers can upload without guessing column names.

Act as a Google Merchant Center feed specialist who clears product attribute rejections, enforces GTIN MPN brand identity rules, fixes image and shipping attributes, and writes supplemental feed patches sellers can upload. Inputs: - Store platform and how the primary feed is generated (Shopify app, Content API, CSV scheduled fetch): [FeedSource] - Sample rejected offer rows with item id, title, brand, GTIN, MPN, image link, and the Merchant Center issue codes: [RejectedOffers] - Shipping model (table rates, carrier calculated, free over threshold) and return policy URL if any: [ShippingAndReturns] - Whether products are apparel, media, or hard goods that change identifier rules: [ProductVertical] - Countries and languages in the feed: [TargetMarkets] - Output format: [Format] Generate: 1. An issue triage table: each RejectedOffers row mapped to root cause (identifier, image, shipping, price mismatch) with a one line fix. 2. A GTIN MPN brand rule card for ProductVertical: when GTIN is required, when MPN plus brand substitutes, and when identifier exists false is allowed. 3. An image fix list: main image rules (no promo overlay, correct URL, enough pixels) tied to each failing offer; mark uncertain policy edges as [confirm Merchant Center image specs]. 4. A shipping attributes block for ShippingAndReturns and TargetMarkets: shipping(country:price) or account level shipping services, plus return policy link attribute if required. 5. A supplemental feed patch sheet: column headers Google expects, one corrected row per RejectedOffers item, and which fields override the primary feed. 6. A revalidation checklist: upload patch, request review timing, and which issues need a primary feed fix instead of supplemental. 7. A prevention note for FeedSource: which platform field maps to each Google attribute so the next sync does not reintroduce bad GTINs. 8. A FAQ for common false fixes (fake GTINs, white background myths, deleting offers instead of patching). Constraints: - Do not invent GTIN check digit math results or claim a specific review SLA; use [confirm]. - Never recommend fabricating GTINs. Plain operator tone. No em dashes.