Search engines don’t index 4XX pages given that they don’t perform. Therefore, they’ll dismiss any canonical tags pointing to these kinds of pages and often turn out indexing the incorrect (non-canonical) version from the web site. In the diagram, we show the move of despatched gatherings using the Google Integrator module https://top10bookmark.com/story18689889/prestashop-google-tag-manager-things-to-know-before-you-buy