Questione giuridica chiave
Whether the administrative appeal against the Central Office's mutual legal assistance decision is admissible and whether the account holder has standing.
Decisione estratta
The appeal in administrative law is admissible, and the account holder has standing to challenge the measure.
Motivazione estratta
A decision granting assistance under the treaty and rejecting an opposition may be attacked by administrative-law appeal; the account holder of the affected account is directly affected and therefore entitled to appeal.