Kernrechtsfrage
Whether the appeal against the remand decision was admissible under Art. 93 BGG.
Extrahierter Entscheid
The remand decision was an independently appealable interim decision, but the appellant failed to show any irreparable harm or that an immediate final decision would avoid significant evidentiary effort.
Extrahierte Begründung
A remand decision is an interim decision within Art. 93 BGG. Admissibility requires either irreparable disadvantage or significant saving of time and costs. The appellant did not satisfy the substantiation requirement, and the contested pension calculation could become moot after the further investigation.