You specify the principal URL as the online search engine can have issue deciding which one need to be the first URL.  The following tutorial will show you how you can empower Canonical URLs in Prestashop one.5. Enhance the indexing of your respective Prestashop urls in Google. This module https://bookmarkprobe.com/story19481372/the-single-best-strategy-to-use-for-prestashop-catalog-mode