Kernrechtsfrage
Whether the appeal was admissible against the AHV despite the claim being fully dismissed below
Extrahierter Entscheid
The appellant lacked legal interest against the AHV because the claim against it had been rejected in full; the appeal was inadmissible in that respect.
Extrahierte Begründung
A party may appeal only if it is adversely affected. The later costs argument was raised too late and without proper reasoning.