Kernrechtsfrage
Whether the appellant had standing to challenge the transmission and seizure measures for both bank relationships.
Extrahierter Entscheid
The appellant had standing only for the joint account hhh, because he was merely the economic beneficiary of the V. SA account and not directly affected by the measure there.
Extrahierte Begründung
In MLAT proceedings, standing belongs to persons directly subject to coercive measures; account holders may challenge seizures or transmission orders affecting their own account files, but not merely economic beneficiaries.