You specify the first URL since the online search engine might have issues figuring out which one must be the main URL.  The subsequent tutorial will tell you about ways to permit Canonical URLs in Prestashop one.five. Hook Overview: This hook lets you insert any further fields or details https://addons.prestashop.com/es/seo-posicionamiento-buscadores/31857-google-rich-snippets-automatico-json-ld-opengraph-seo.html