Kernrechtsfrage
Whether the appeal was admissible despite the appellant's failure to submit or identify the challenged decision.
Extrahierter Entscheid
No. The formal defect was not cured, so the court could not examine the appeal.
Extrahierte Begründung
Under Art. 42(5) BGG, the appellant had to cure the defect after being invited to do so. He refused delivery of the court's letter and remained responsible for ensuring service of official acts after filing the appeal.