What it is
Putting a noindexed or non-canonical URL in the sitemap contradicts the page directives. The sitemap says index me, the page says do not, and Google has to reconcile the conflict. Non-indexable URLs listed. Contradictory signals undermine trust in the sitemap.
Why does sitemap contains noindex/canonicalised urls matter for AI search?
Contradictory signals undermine trust in the sitemap.
How do you fix it?
List only indexable canonicals.
How do you find it on your site?
- For each sitemap URL, check its robots directives and canonical.
- Flag any that are noindex or canonical to a different URL.
- Remove them so the sitemap lists only canonical, indexable pages.
- Re-generate to keep it consistent.
Which ranking and citation factors does it touch?
Conflicting sitemap and page-level signals waste crawl and can confuse canonical selection. They should always agree.
What is the impact?
Medium-high. Direct.
What is the evidence?
Only indexable canonical URLs belong in sitemaps. Google Search Central, Build and submit a sitemap; Google Search Central, Consolidate duplicate URLs (canonicalization)
Sources
Frequently asked questions about sitemap contains noindex/canonicalised urls
What does "Sitemap contains noindex/canonicalised URLs" mean?
Non-indexable URLs listed.
How do you fix sitemap contains noindex/canonicalised URLs?
List only indexable canonicals.