Questão jurídica principal
Whether the staatsrechtliche Beschwerde was admissible alongside the Verwaltungsgerichtsbeschwerde
Decisão extraída
The constitutional complaint was inadmissible because the matter concerned the implementation of binding federal harmonization law and the administrative appeal was the proper remedy.
Fundamentação extraída
Where cantonal provisions operate merely as implementing rules for Art. 69 StHG, federal administrative appeal lies; a parallel constitutional complaint is excluded.