Cart Information – Tracks the event whenever a buyer adds a product for the cart, eliminates a product from cart or proceeds to checkout. Check out information of your product or service additional to cart and cart information which include cart ID and cart price tag on Google Tag Manager. https://addons.prestashop.com/en/seo-natural-search-engine-optimization/30904-automatic-hreflang-tags-canonical-tags-all-pages-seo.html