You specify the main URL since the search engine can have problem analyzing which just one really should be the principal URL.  The subsequent tutorial will teach you ways to permit Canonical URLs in Prestashop 1.5. En muchas ocasiones, en las tiendas on the net se generan URLs que https://addons.prestashop.com/de/seo-suchmaschinenranking-optimization/31857-automatische-google-rich-snippets-json-ld-opengraph-seo.html