Questione giuridica chiave
Whether the public-law appeal against the cantonal decision on admissibility of opposition in exchange-debt proceedings was admissible as to its object.
Decisione estratta
Only annulment of the cantonal decision could be sought by public-law appeal; the request to declare the opposition admissible was inadmissible.
Motivazione estratta
Such decisions are not civil disputes for purposes of a reform appeal, but may be challenged for arbitrariness; a public-law appeal cannot seek substitutionary merits relief.