Question juridique clé
Whether the administrative appeal was admissible and the constitutional complaint excluded
Solution extraite
The administrative appeal was admissible because the dispute concerned the implementation of binding federal harmonization law; the constitutional complaint was inadmissible.
Motifs extraits
Article 69 StHG applied directly from 1999 in the cantons that had switched to the new system, so the case concerned harmonized federal law, not purely autonomous cantonal law.