Duplicate Products
Your feed contains two or more items that Google identifies as the same product. This happens when the same product is submitted with different IDs, or when it appears in multiple feeds targeting the same country. Google deduplicates to prevent one seller from dominating search results, so only one version actually shows — the others are suppressed. For your account, this wastes feed capacity and creates reporting confusion.
Duplicate items / Duplicate product across feedsImpact: Duplicate products start as a Warning but have cascading consequences. Google picks one version to serve and deprioritizes the others, reducing overall impression share. Duplicates also make your Google Ads campaigns harder to optimize — you can't split budgets cleanly when the same SKU appears twice. Severe duplication cases (hundreds of duplicates) can trigger full account review.
Root Causes
- 1Multiple feeds targeting the same country include the same products — common when you run separate feeds for different product types but have overlap, or when you have both a main feed and a promotional feed that includes sale items.
- 2A feed plugin migration created duplicate entries — old feed still active while new one launched, both include the same products.
- 3Products with different IDs but identical GTIN, title, brand, and other attributes — Google detects these as duplicates even when your internal IDs differ.
- 4Variants submitted as separate products without an item_group_id — Google may see them as duplicates when they're actually intended as product variants.
- 5Syndication across multiple sales channels (your main feed + a marketplace integration feed + a local inventory feed) with overlapping SKUs.
Fix by Platform
- 1Check how many feeds you have: GMC → Products → Feeds. If you see multiple primary feeds for the same country, that's the primary cause of duplicates.
- 2Consolidate feeds: pick one feed as the source of truth for each target country. Disable or delete duplicate feeds in GMC. In Shopify, disable multiple feed apps pointing to the same GMC account.
- 3For variants misclassified as duplicates: ensure all variants have the same item_group_id (parent product ID) so Google groups them instead of seeing them as duplicates.
- 4For products with duplicate GTINs: each physical SKU should have a unique GTIN. If you have two products with the same GTIN (e.g., a variant incorrectly sharing GTIN with its parent), assign correct GTINs in Shopify Admin → Products → Variants.
- 5For products marketed in multiple collections: this is fine — Google sees collections as organizational, not duplication signals. The issue is at the feed level, not the collection level.
When This Doesn't Apply
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Frequently Asked Questions
How does Google identify duplicates?+
Google uses multiple signals: (1) identical or near-identical GTIN, (2) matching brand + MPN combination, (3) matching title + brand + image_link, (4) overlapping feed IDs targeting the same country. If any of these match across multiple feed items, Google flags them as duplicates. Item_group_id saves variants from being flagged — when present, Google treats items with the same group_id as related, not duplicate.
What happens when Google finds duplicates?+
Google picks one version to serve (usually the one with the best quality signals — complete attributes, high-quality images, recent landing page) and suppresses the others. The suppressed versions appear in your feed dashboard as 'disapproved: duplicate' but they don't count as policy violations. However, they do waste your feed quota and make campaign reporting harder because you have multiple SKU entries for the same product.
Can I have the same product in multiple feeds for different countries?+
Yes — Google considers feeds targeting different countries as separate catalogs. The same product can appear in a US feed, UK feed, and DE feed without being flagged as duplicate. Duplicates are only detected when the same product appears multiple times within the same target country.
How do I merge duplicate products?+
Identify which version has the best data (highest quality images, most complete attributes, correct pricing). Keep that one active. Remove the duplicates from their source feeds by either: (a) deleting them from the second feed, (b) adding feed-level filters to exclude them, or (c) consolidating multiple feeds into one. If the duplicates are in different platforms (e.g., Shopify + CSV manual feed), migrate everything to one source of truth.