The 8 Most Costly Google Merchant Center Errors — and How to Fix Them

Every disapproved product in Merchant Center is lost revenue. Here are the eight most common and costly GMC errors, what causes them, and the fastest way to resolve each one.

Why GMC errors are a revenue emergency

Every disapproved product cannot appear in Shopping results. Every policy violation risks an account-level suspension that wipes your entire Shopping presence overnight. Most merchants either don't know they have errors, or treat them as low-priority. They shouldn't. Start with Merchant Center → Products → Diagnostics, sort by 'items affected', and resolve account-level issues first.

Error 1: Price mismatch between feed and landing page

Google compares your feed price against your product page price continuously. Any mismatch — even by one cent — triggers a disapproval. Fix: switch to the Content API or increase Scheduled Fetch frequency to every 2–4 hours. For immediate resolution, use a supplemental feed to override the affected prices.

Error 2: Missing or invalid GTIN

Blank or fake GTINs trigger quality flags. Source GTINs from your supplier for resold goods. For genuinely unidentified products, set identifier_exists to FALSE — never leave it blank. Google validates GTINs against the GS1 database; fake submissions will be caught.

Error 3: Availability mismatch

Feed says 'in stock' but the product page shows 'sold out.' This is a policy violation and one of the fastest routes to account-level action. Fix: implement real-time inventory sync. As a stop-gap, set out-of-stock products to 'out of stock' with an estimated restock date.

Error 4: Image policy violation

Common triggers: promotional overlays ('20% OFF'), watermarks, coloured backgrounds in categories requiring white, or images below 800×800px. Fix: strip all overlaid text and watermarks from main images. Move lifestyle shots to additional_image_link. Resize images below minimum dimensions.

Error 5: Promotional text in titles

'FREE DELIVERY', 'SALE — 40% OFF', and 'Best Price Guaranteed' in titles cause immediate disapprovals. Move all promotional messaging to the Merchant Center promotions section and your Shopping ad copy. Titles describe the product — nothing else.

Error 6: Destination URL 404 or mismatch

Discontinued products, changed URLs, and seasonal items that have been removed all create broken links. Run a crawl of your feed URLs using Screaming Frog or your feed platform's validator. Update or remove broken URLs. For discontinued products, keep the page live as a 'sold out' page and set availability accordingly.

Error 7: Missing shipping or tax data

Products without shipping data are excluded from Google's 'Free shipping' filter and deprioritised in AI recommendations. Configure your shipping table in Merchant Center → Shipping and Returns. If costs vary by product weight, add shipping_weight attributes to your feed.

Error 8: Account-level suspension

The most serious outcome — all Shopping placements disappear. Read the suspension notice carefully; it specifies the policy violated. Address the root cause thoroughly before appealing. Google's team reviews manually and rejects superficial fixes. Allow 1–3 weeks for review. If in doubt, consult a certified Google Partner before submitting your appeal — a poorly written appeal can extend the suspension.

Prevention: set up alerts now

Set automated alerts in Merchant Center for new disapprovals, account warnings, and feed quality changes. Review Diagnostics weekly. For catalogues of 1,000+ products, invest in a feed management platform — the cost is typically recovered within weeks.

Produx Marketing: The Produx team runs comprehensive GMC error audits — we find every disapproval, trace it to root cause, and implement fixes that stick. Book your audit at produx.nz