Key legal question
Whether the public-law appeal was admissible given its subsidiary nature and overlap with the reform appeal
Extracted holding
Most arguments concern federal law and are therefore excluded from the public-law appeal; the remedy is inadmissible to that extent.
Extracted reasoning
Because public-law appeal is subsidiary, issues of federal law, legal qualification, unjust enrichment, and culpa in contrahendo had already been or could be reviewed in the reform appeal.