The Northern Sami language have two different language codes, "se" and "sme". The code "se" is the most common, but is also used as the code for the macro language. There are several Sami languages, Northern Sami is perhaps the most common.
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The language code "se" is used as a macro code. The code "sme" is starting to be common. All other Sami languages are using the tre letter codes.
You still haven't answered hoo's question, what are you asking for?
"se" and "sme" are equivalent (just different versions of ISO 639) and only mean Northern Sami. Anything labelled as "se" or "sme" when it's not Northern Sami is incorrectly labelled. Whether you use "se" or "sme" is also largely irrelevant, since they mean the same thing and you can't stop things from converting one to the other whenever they want.
Please provide source. http://www.iana.org/assignments/language-subtag-registry/language-subtag-registry says it is neither outdated nor macrolanguage and does not even list "sme" (as expected).
Message I got was pretty clear, but I doubt that this will be done.
I'm not going to argue over this, someone working on Sami languages must reopen the issue.