[Tagging] any valid usage of admin_level=1 ?

[Marc M.]

Hello,

following a small thread on irc, I have review 20 usage of admin_level=1
all are mistakes, often by new mapper
for ex https://www.openstreetmap.org/way/779838275
is there a case of real use of admin_level=1?
wiki only said that UE isn't a admin_level=1
but don't list any valid usage of it
https://wiki.openstreetmap.org/wiki/Tag:boundary%3Dadministrative#Super-national_administrations
https://overpass-turbo.eu/s/Umf

are these all errors or is there an undocumented usecase ?

Regards,
Marc