Question juridique clé
Whether the appeal against the refusal to reduce AHV contributions was admissible under the BGG.
Solution extraite
An ordinary public law appeal was unavailable because disputes about partial remission/reduction of contributions fall under Art. 83 lit. m BGG; only a subsidiary constitutional complaint could be considered.
Motifs extraits
A decision on contribution reduction under Art. 11(1) AHVG is treated as a partial remission. A mistaken legal remedy instruction cannot create jurisdiction or a non-existing remedy, and the claimant could not invoke reliance protection because counsel could have detected the error from the statute.