Quick answer
When you have multiple sitemaps, use a sitemap index file that lists them.
Sitemap Index
When you have multiple sitemaps, use a sitemap index file that lists them. Submit the index.
Common causes
- Submitting many sitemaps separately.
- No index file.
How to fix
- Create sitemap_index.xml with <sitemap> entries.
- Submit index URL.
FAQ
- Sitemap index?
- Lists other sitemaps.
- When?
- Multiple sitemap files.
Fix it now
Try in validator (prefill this example)