Question juridique clé
Whether the appeal in mutual legal assistance proceedings was admissible under Art. 84 BGG as a particularly important case.
Solution extraite
The case was not particularly important; no fundamental legal question or exceptional significance justified Federal Supreme Court review.
Motifs extraits
Although bank records from the confidential sphere were involved, the lower court applied settled case law convincingly, the appellant raised no new fundamental legal issue, and the matter had no extraordinary significance.