Setting a 4XX HTTP status code for just a canonicalized URL has exactly the same effect as using the noindex tag: Google will likely be struggling to see the canonical tag and, thus, can’t transfer “link equity” for the canonical Variation. Empower by default. For those who enable this selection, https://advicebookmarks.com/story26415005/etiquetas-autom%C3%A1ticas-hreflang-canonical-etiquetas-seo-for-dummies