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Issue Dictionary

Every Merchant Center issue,
explained in plain English

Merchant Center issues are easy to cause. A missing GTIN, a disallowed image, or a mistyped attribute can block visibility across Google Shopping, free listings, and Search. Here is what each one means and how to fix it.

AllErrorsWarningsMerchant data2026 specsComparisons

1.Product Identifiers

6 guides
missing or invalid GTIN issues in Shopify for Google ShoppingFind Shopify products missing valid GTINs, understand identifier_exists rules, and avoid unsafe barcode guesses in Google Merchant Center feeds.
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missing GTIN in Shopify for Google ShoppingResolve missing GTIN warnings in Shopify feeds, identify affected variants, and avoid fake barcode fixes that can create Merchant Center risk.
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invalid GTIN errors in Google Merchant Center for ShopifyCheck invalid GTIN format and check-digit issues, trace them back to Shopify variants, and repair identifiers without unsafe AI guesses.
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identifier_exists issues in Shopify feedsUnderstand when identifier_exists should be true or false for Shopify products and prevent unsafe GTIN workarounds in Google Merchant Center.
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missing brand in Shopify Merchant Center feedsDiagnose missing brand in Shopify, understand the Merchant Center impact, and choose a safe FeedRescue repair path without inventing product facts.
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missing mpn in Shopify Merchant Center feedsDiagnose missing mpn in Shopify, understand the Merchant Center impact, and choose a safe FeedRescue repair path without inventing product facts.
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2.Price, Sale Price, And Availability

5 guides
price mismatch issues between Shopify and Google Merchant CenterTroubleshoot Shopify price mismatches, sale price date errors, structured data conflicts, and safe feed refresh options for Merchant Center.
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Google Shopping price mismatch errors in ShopifyCompare Shopify prices, storefront prices, structured data, and feed values to resolve Google Shopping price mismatch diagnostics safely.
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availability mismatch in Shopify and Google Merchant CenterFind why Shopify inventory, storefront availability, and Merchant Center feed status disagree, then choose the safest repair path.
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sale price effective date issues in Shopify feedsClean stale sale price dates and promotion windows in Shopify product feeds so Merchant Center sees current pricing data.
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structured-data price mismatch in Shopify product pagesDetect JSON-LD and storefront price conflicts that can trigger Merchant Center mismatch issues for Shopify products.
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4.Apparel And Variant Attributes

3 guides

5.Category, Titles, And Descriptions

3 guides

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