You specify the key URL because the search engine could possibly have problems determining which one particular ought to be the first URL.  The following tutorial will demonstrate ways to allow Canonical URLs in Prestashop 1.five. By default, PrestaShop's deep URLs (that may be, certain pages in lieu of https://addons.prestashop.com/it/seo-indicizzazione-naturale/31857-google-rich-snippet-automatico-json-ld-open-graph-seo.html