How to fix: Mismatched structured data markup (gtin)

GTIN in the feed doesn't match the GTIN in the schema.org markup on the landing page.

Landing pages must be crawlable, available, fast-loading, and consistent with the feed data. Issues here include 404s, server errors, redirect loops, robots.txt blocks, missing schema markup, country-specific availability problems, and content/price mismatches with the feed.

1. Test the landing page in a private browser session — confirm it loads quickly, displays the product, and matches the feed (price, title, availability).
2. Check robots.txt to confirm Googlebot is allowed to crawl `/products/` paths.
3. Eliminate redirect chains — Google allows max 2 redirects.
4. Add structured data (JSON-LD Product schema) to confirm price and availability programmatically.
5. If the issue persists after fixing, request a website check in Merchant Center to expedite re-review.

• WAF rules blocking Googlebot — whitelist Google's published IP ranges
• Geo-redirects sending US Googlebot to a non-US storefront with different prices
• Slow time-to-first-byte (>3 seconds) — Google may classify as 'unavailable'