It’s unlikely you’ll ever generate website page versions targeting all languages and regions. In some cases, you’ll want to offer Google an indication of what do to every time a specified area or language isn’t out there or doesn’t exist. An x-default tag will be the URL that Google shows.  https://addons.prestashop.com/de/seo-suchmaschinenranking-optimization/31857-automatische-google-rich-snippets-json-ld-opengraph-seo.html