Questione giuridica chiave
Whether the appeal had to be entered into despite the missing attachment of the challenged decision.
Decisione estratta
No; the appeal was not admissible because the required attachment was not filed within the additional deadline.
Motivazione estratta
The court had ordered rectification under Art. 42 Abs. 5 BGG, but the appellant did not cure the formal defect by the expiry of the deadline.