The website has two sets of hreflang-codes, sitewide.
Set 1:
Set 2:
The second set points towars the home of the subdomain, even from the individuall pages.
The first set does point towards individual pages, but doesn’t include all the subdomains; and points towards url’s that will be changed at a later point in time.
What I would like to achieve is proper hreflang-tags; which means removal of the tags above; and replacing them with tags that point towards specific pages in that language.
As K_Br4 mentioned with apps, Digital Darts: Hreflang Tags is one, which we own. Our support help users remove any other duplicate hreflang tags so your hreflang tags are perfect.
Looking at your theme’s source file, the second lot of hreflang tags are probably inserted through your theme.liquid from a customization done by a developer.
If you have another Shopify store, these URLs need to be in your hreflang tags, which Shopify can’t handle by default. It’s what our app solves.