Key legal question
Whether the federal debt-enforcement complaint was admissible to the extent it alleged violations of cantonal procedural law.
Extracted holding
The complaint could not be heard insofar as it relied on cantonal procedural rules, because only violations of federal law or international treaties may be raised under Art. 19 SchKG.
Extracted reasoning
Federal review under Art. 19 SchKG is limited to federal law and treaties; cantonal-law grievances are excluded.