Quick answer
You can list multiple Sitemap lines.
robots.txt Multiple Sitemaps
You can list multiple Sitemap lines. Each must be absolute URL.
Common causes
- One Sitemap only.
- Relative URL.
How to fix
- Add Sitemap: URL per line.
- Absolute URLs only.
FAQ
- Multiple Sitemap?
- Yes, one per line.
- URL?
- Absolute.
Fix it now
Try in validator (prefill this example)