Case in point: You've an e-commerce Web site with merchandise web pages for different sizes of a certain t-shirt. So in short, I entered an if-then assertion, exactly where I informed the template to not include the canonical tag with the products with the ID nrs specified. For those merchandise https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html