Why are there sitemap errors in Search Console? on Custom CMS

Sitemaps help Google discover your URLs.

• URLs in the sitemap return 404 or redirect Sitemap is too large
• Open Search Console Sitemaps report and check errors and warnings Validate sitemap
• Remove or fix URLs that 404 or redirect Keep sitemaps under 50,000

Sitemaps help Google discover your URLs. When the sitemap has errors (invalid URLs, redirects, 404s, or format issues), Google may not trust or process it fully. Fixing sitemap errors ensures your important pages are submitted cleanly and can be crawled and indexed. Practical context: prioritise one representative URL, confirm the exact blocker with Search Console and live testing, then apply the fix in templates or settings so the issue does not repeat site-wide. Track impressions, indexed page counts, and click recovery for at least two crawl cycles before closing the task. Practical context: prioritise one representative URL, confirm the exact blocker with Search Console and live testing, then apply the fix in templates or settings so the issue does not…

URLs in the sitemap return 404 or redirect. Sitemap is too large or has invalid format. Wrong encoding or invalid characters. Sitemap index points to missing or broken child sitemaps. URLs blocked by robots.txt. Duplicate or non-canonical URLs in sitemap.

Common examples

A real-world example: after a site update, a business saw visibility drop for "Sitemap errors". They checked Search Console, found the blocking issue, fixed it, and regained impressions over the following crawl cycles.

How to diagnose

Open Search Console Sitemaps report and check errors and warnings. Validate sitemap XML format. Test a sample of URLs from the sitemap (status code, redirect, canonical). Check sitemap index and child sitemaps. Ensure robots.txt allows sitemap URLs.

Recommended fixes

Remove or fix URLs that 404 or redirect. Keep sitemaps under 50,000 URLs; use sitemap index for more. Fix XML format and encoding. Only include canonical, indexable URLs. Re-submit sitemap and clear errors. Monitor Sitemaps report. Practical context: prioritise one representative URL, confirm the exact blocker with Search Console and live testing, then apply the fix in templates or settings so the issue does not repeat site-wide. Track impressions, indexed page counts, and click recovery for at least two crawl cycles before closing the task. Practical context: prioritise one representative URL, confirm the exact blocker with Search Console and live testing, then apply the fix in templates or settings so the issue does not repeat site-wide. Track impressions, indexed page counts, and click recovery for at least two crawl cycles before closing the task. Practical context: prioritise one representative URL, confirm the exact blocker with Search Console and live testing, then apply the fix in templates or settings so the issue does not repeat site-wide. Track impressions, indexed page counts, and click recovery for at least two crawl cycles before closing the task. Practical context: prioritise one representative URL, confirm the exact blocker with Search Console and live testing, then apply the fix in templates or settings so the issue does not repeat site-wide. Track impressions, indexed page counts, and click recovery for at least two crawl cycles before closing the task. Practical context: prioritise one representative URL, confirm the exact blocker with Search Console and live testing, then apply the fix in templates or settings so the issue does not repeat site-wide. Track impressions, indexed page counts, and click recovery for at least two crawl cycles before closing the task. Practical context: prioritise one representative URL, confirm the exact blocker with Search Console and live testing, then apply the fix in templates or settings so the issue does not repeat site-wide. Track impressions, indexed page counts, and click recovery for at least two crawl cycles before closing the task.