The applicants challenged Article 28 on the finality and unchallengeability of arbitral awards.
Holding and outcome
The majority upheld the then-current provision, linking finality to voluntary written selection of an alternative tribunal. It decided the constitutional issue without retrying the individual debt dispute.
Limits of the holding
Since 2025 the statute permits special annulment for specified state or municipal participation. The 2015 holding does not establish absolute unchallengeability today. The PDF’s separate opinion begins on page 15 and is not the majority’s position.