All language codes permissible for wikimedia projects (ie generally ISO 639-1 and -3) should be available for choosing in the sitelinks sections of Wikidata. When a code is entered of which there is no subdomain (of Wikipedia, Wikivoyage, etc.) yet, the target page should be searched on Incubator. (e.g. Wikipedia sitelinks, code liv, page name X => Search for incubator:Wp/liv/X and allow addition of the link if that page exists).
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**Version**: unspecified
**See Also**:
{T37960}
{T73685}
[[ https://www.wikidata.org/wiki/User:Nikki/Permanent_duplicates | list of wikis that have Wikimedia permanent duplicated pages (Q21286738) ]]
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Also proposed in #Community-Wishlist-Survey-2016. Received 54 support votes, and ranked #18 out of 265 proposals. [[ https://meta.wikimedia.org/wiki/2016_Community_Wishlist_Survey/Categories/Wikidata#Support_for_Incubator_projects| View full proposal with discussion and votes here.]]