58A contract of guarantee is a separate contract from that which binds the creditor and the debtor, by which the guarantor, who is a third party to that contractual relationship, has, as his or her role, to guarantee to the creditor, in this case, the payment service provider, payment of what the debtor, in this case, the payment service user, may have to pay to the latter, under the guaranteed obligation, which consists of the debt owed by the debtor to the creditor.
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