Quick answer
Each URL should appear once in a sitemap.
Sitemap Duplicate URLs
Each URL should appear once in a sitemap. Duplicates waste crawl budget and can cause confusion.
Common causes
- Same URL listed twice.
- Multiple sitemaps with same URLs.
How to fix
- Deduplicate URLs.
- Use one source of truth per URL.
FAQ
- Duplicate URL ok?
- No; list once.
- Different sitemaps?
- Still no duplicate across them.
Fix it now
Try in validator (prefill this example)