The concept „contractual debt” appearing in Article 27, paragraph (2) point a) of Act XLIX of 1991 on Bankruptcy and Liquidation Proceedings involves creditors’ claims recognised by the debtor in the contract and other claims of the creditor originating from the contract about which the creditor informed the debtor to an extent necessary for raising awareness of the debt demand, including demands originating from not proper contractual performance or from the termination of the contract.