Search engines like yahoo don’t index 4XX pages because they don’t work. Due to this fact, they’ll dismiss any canonical tags pointing to these types of pages and often wind up indexing the incorrect (non-canonical) version of your web site. Canonicals should really usually point to one of the most authoritative https://webcastlist.com/story19977639/5-simple-statements-about-canonical-link-tag-not-found-explained