You specify the primary URL since the search engine could possibly have problems pinpointing which 1 must be the primary URL.  The subsequent tutorial will explain to you ways to enable Canonical URLs in Prestashop one.five. If you are using a canonical tag Answer on your internet site, make https://www.presta-addons-modules.com/en/opencart-seo-automatic-google-rich-snippets-json-ld-integration-opengraph-twitter-tags-schemaorg.html