Solidary debtor that paid the full amount arising from an arbitration award. Co-debtor under insolvency proceedings. Subrogation of the solidary debtor in the rights of the creditor party at a moment subsequent to the commencement of court-supervised reorganisation. Constitution of the credit occurring on the date of full payment by the solidary debtor, not on the date of rendering of the arbitration award. Extraconcursal nature of the credit: