Questione giuridica chiave
Whether the staatsrechtliche Beschwerde was admissible alongside the Verwaltungsgerichtsbeschwerde
Decisione estratta
No separate constitutional complaint was available because the administrative law appeal already allowed review of federal and treaty law issues.
Motivazione estratta
Where the administrative law appeal is available, it covers alleged violations of federal law and state treaty law, leaving no room for a parallel constitutional complaint on the same matter.