You specify the primary URL as the search engine can have issues deciding which a single must be the first URL.  The next tutorial will demonstrate how you can allow Canonical URLs in Prestashop 1.five. Enhance the indexing of your Prestashop urls in Google. This module AUTOMATICALLY adds, without https://addons.prestashop.com/ru/seo-natural-search-engine-optimization/31857--rich-snippets-json-ld-opengraph-seo.html