You should use canonical tags to indicate the key Variation of the webpage to search engines. Lots of hreflang errors originate from using canonical tags and hreflang attributes with each other improperly. For anyone who is using a CMS like WordPress, Joomla, or One more System, there are sometimes settings https://addons.prestashop.com/es/seo-posicionamiento-buscadores/31857-google-rich-snippets-automatico-json-ld-opengraph-seo.html