You specify the first URL since the online search engine could have issue deciding which just one ought to be the key URL.  The subsequent tutorial will provide you with ways to help Canonical URLs in Prestashop 1.five. By default, PrestaShop's deep URLs (that's, distinct pages rather then on-line https://bookmarkgenius.com/story19091218/the-definitive-guide-to-prestashop-hreflang-canonical-tags