Questione giuridica chiave
Whether the staatsrechtliche Beschwerde was admissible alongside the Verwaltungsgerichtsbeschwerde
Decisione estratta
The constitutional complaint was inadmissible because the matter concerned the implementation of binding federal harmonization law and the administrative appeal was the proper remedy.
Motivazione estratta
Where cantonal provisions operate merely as implementing rules for Art. 69 StHG, federal administrative appeal lies; a parallel constitutional complaint is excluded.