A sitemap with invalid XML syntax, or one that lists dead/redirecting/blocked URLs, actively confuses crawlers instead of helping them — Google Search Console will often flag sitemap errors, but many sites never check, assuming the auto-generated file is automatically correct.
A sitemap that exists but is malformed or empty is barely better than no sitemap at all — Google may simply ignore it.
The sitemap is valid XML, every listed URL resolves with a real 200 status, and Search Console shows no sitemap errors.
Fix it, then re-scan — the check confirms itself. No manual checkbox, the scan is the truth.
Run this check in H.I.V.E. →