What is Application of payment where debt to be discharged is not indicated? Section 60 of Indian Contract Act 1872
60. Where the debtor has omitted to intimate and there are no other circumstances indicating to which debt the payment is to be applied, the creditor may apply it at his discretion to any lawful debt actually due and payable to him from the debtor, whether its recovery is or is not barred by the law in force for the time being as to the limitation of suits.
Time and place for performance
Performance of reciprocal promises
Appropriation of payments