Key legal question
Whether the public-law appeal against the cantonal revision decisions was admissible despite an independent federal-law ground supporting revision.
Extracted holding
The appeal was inadmissible because the cantonal decision rested on an additional independent ground based on federal law that was not challenged by the proper remedy.
Extracted reasoning
Where a decision is based on two independent grounds, both must be attacked; the appellant challenged only the cantonal-law revision ground and not the separate federal-law basis, so the contested decision remained supported.