Non-canonical declared as canonical

How to fix it

Pick one URL as the canonical for the cluster and update every page to agree.

Sibling checks in this category

• Canonical points to 4xx - The canonical URL returns a 4xx error. The page has no valid canonical.
• Canonical points to 5xx - The canonical URL returns a 5xx error.
• Canonical points to redirect - The canonical URL redirects. Search engines may follow it but the signal is weakened.
• Canonical has no incoming links - The canonical URL is not linked anywhere internally, suggesting the cluster is fragmented.

Catch it on your site

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