Store Views, Basic URLs and Language Linking
Check the availability of the product in both store views and the assignment of the international extension. A missing target must not appear as a valid language pair.
The language of a Store View and the public URL assignment must match the output language set. Additional internationalization extensions can generate the references independently of the store switch.
Where to check the setting in Magento
Compare Store View, base URL and voice mapping of the specific page. Additional hreflang outputs may come from an extension. Check their product or category assignment before entering a domain as an alternative language version.
Example of this specific finding
Illustrative control case: The German side calls the English version, which knows only itself. The language set is incomplete.
follow-up audit in Magento
Track an identical product in the intended store views and check availability, canonical and reference back. Store IDs alone are not a public language URL.
Retrieve the assignment from both URLs and supplement backlinks. For multiple languages, check the entire set instead of just a single pair.
Derogations and scope
A link in the voice menu does not replace the hreflang assignment. Both can come from different data sources.
Reference: Magento Open Source or Adobe Commerce with classic storefront. Consider store views and extensions; other storefront architectures have their own configurations.
Classify the general error
Definition, system-independent causes and further correction examples: Check language references as a related group