Hreflang validation errors
Hreflang tags have errors: missing x-default, conflicting language/region, invalid format. Can affect international SEO.
Common causes
- Missing x-default for language variants.
- Conflicting hreflang across pages.
- Invalid hreflang format (e.g. wrong ISO codes).
How to fix
- Add x-default for your primary version.
- Ensure reciprocal hreflang links between pages.
- Use Hreflang Validator to check.
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