Questione giuridica chiave
Whether the appeal against the mutual legal assistance decision was admissible and whether the complainant had standing as account holder.
Decisione estratta
The appeal was admissible against the cantonal decision, and the complainant had standing because the transmitted records concerned his bank accounts.
Motivazione estratta
Under the applicable mutual assistance provisions, an appeal lies against the final cantonal decision; an account holder whose banking documents are transmitted is directly affected and therefore entitled to complain.