Failure to pay checks linked to an accountability contract containing an arbitration clause. The arbitration clause inserted in a contract (extrajudicial enforcement instrument) bars the adjudication of the bankruptcy petition, since, even accepting that the agreement to arbitrate does not extend to declaring bankruptcy, the submission to arbitration of the dispute arising under the contract upon whose validity or resolution the liquidity and certainty of the instruments supporting the petition depend is unavoidable. Dismissal of the proceedings so that the merits may be decided beforehand through arbitration: