It’s not likely you’ll at any time create page versions targeting all languages and locations. Occasionally, you’ll want to give Google an indication of what do to every time a specified site or language isn’t obtainable or doesn’t exist. An x-default tag will be the URL that Google displays.  HubSpot https://addons.prestashop.com/nl/seo-zoekmachineoptimalisatie-vermelding/31857-automatische-google-rich-snippets-json-ld-opengraph-seo.html