the creation of a new group does now allow German letters (umlauts) like ä, ö, ü and ß
But it is not mentioned in the error message that only ANSI letters are allowed.
Would be good to mention it in the error message that only ANSI is allowed in the group names.
Group names follow the same rules as usernames. The username error also does not mention ASCII only. Username must only include numbers, letters, dashes, and underscores.
I’m not sure if adding “ASCII” to the error would be a good idea, however, as most users won’t know that is.
ä, ö, ü, and ß are letters.
What is the technical reason why they are not allowed?
Unfortunately regular users usually do not know about ASCII, ANSI and such things. You are welcome to update the German translation of that error message on Transifex to make it easier for German speaking people to understand.
I really hope that we can lift the ASCII restriction for usernames and group names sometime in the future, but yeah, we have to live with it for now. Sorry about that.
I did there already a couple of the german translations for Discourse in the last couple of months. 
I will have a look at this specific error message on the weekend.
유니코드 사용자 이름과 그룹 이름은 이미 꽤 오래前から 지원되어 왔습니다. unicode usernames 사이트 설정을 활성화하세요.
이 주제는 4일 후 자동으로 닫혔습니다. 더 이상 새 답글을 작성할 수 없습니다.
