Only canonical URLs need to be listed in the sitemap, Though Google claims that doing this is a weak canonicalization signal. You should use Ahrefs to resolve this concern – just go to the list of pages that link towards the URL from the hreflang annotations and click on about https://addons.prestashop.com/nl/seo-zoekmachineoptimalisatie-vermelding/31857-automatische-google-rich-snippets-json-ld-opengraph-seo.html