Kernrechtsfrage
Whether the appeal against the mutual assistance decision was admissible under Art. 84 LTF
Extrahierter Entscheid
The appeal was inadmissible because, although secret information was involved, the case was not shown to be particularly important.
Extrahierte Begründung
Art. 84 LTF allows Federal Tribunal review only in exceptional mutual-assistance cases involving secret information and a particularly important case. The appellant merely alleged incompleteness, proportionality issues, and lack of usefulness of the bank documents, without demonstrating serious procedural violations or grave defects abroad as required by Art. 84 para. 2 LTF and Art. 42 para. 2 LTF.