Seitenhistorie

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Most applications also seem to expect that such identifiers never change, which combined with the other requirements (globally unique, not overly long, not ugly, known/recognizable to the subject) makes this impossible to fulfill at most academic institutions. I.e., you can't win and this attribute cannot solve all the requirements people throw at it.

 Practically speaking there are only two reasonable ways to generate eduPersonPrincipalName values:

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