You specify the key URL because the internet search engine could have issues identifying which 1 needs to be the first URL.  The following tutorial will show you how to permit Canonical URLs in Prestashop 1.5. For those who’re syndicating or republishing content material on other sites, this is https://addons.prestashop.com/ru/seo-natural-search-engine-optimization/31857--rich-snippets-json-ld-opengraph-seo.html