Thus, it is very clear that payment made voluntarily or otherwise under mistake, either in law or fact, can be recovered once the mistake is established. As such in law, the respondent bank is entitled to recover the money credited by mistake or under coercion. The mistake could have happened inadvertently or an act of commission or omission by the employees of the bank. According to the bank, when the amount has been wrongly credited and when a demand is made to repay, and when the customer retains the money wrongfully and refused to return the same, then the same amounts to unjust enrichment. It is the submission of the bank that on account of such obligation to repay or return the money received by mistake, such amount is a liability, constituting 'debt' within the meaning of 'debt', as per Section 2(g) of RDDBFI Act, 1993. Hence, bank is entitled to recover the amount, credited into the petitioner's account as 'debt', however, subject to limitation. Accordingly, the first