Rule site.sitemap.not-in-robots
Reference your sitemap from robots.txt
site.sitemap.not-in-robots is a check in Crawlmind's site audit that grades medium-impact issues of this kind. This page explains why the rule matters and the exact fix.
Why it matters
Crawlers find sitemaps two ways: explicit `Sitemap:` line in robots.txt, or guessing common paths (/sitemap.xml, /sitemap_index.xml). Guessing is slow and not all bots do it. Naming the sitemap in robots.txt removes the ambiguity and surfaces it to every conformant crawler.
The fix
```
# Add one Sitemap: line per sitemap file.
Sitemap: https://example.com/sitemap.xml
# Index file pointing at multiple sub-sitemaps also works.
Sitemap: https://example.com/sitemap_index.xml
```
The `Sitemap:` directive is independent of any `User-agent:` group: it applies to every crawler.