You specify the main URL as the internet search engine may have problem pinpointing which just one should be the key URL.  The subsequent tutorial will explain to you how you can help Canonical URLs in Prestashop one.five. Enhance the indexing of your Prestashop urls in Google. This module https://addons.prestashop.com/it/seo-indicizzazione-naturale/31857-google-rich-snippet-automatico-json-ld-open-graph-seo.html