India, April 29 -- In view of the mega unified payments interface (UPI) outage earlier this month, the National Payments Corporation of India (NPCI) has issued a circular to PSP (Payment Service Provider) banks to curb future crises.

The retail payments body, in a circular, said that the PSP banks and acquiring banks should ensure that application programming interface (API) requests to UPI should be monitored and moderated for appropriate use. This includes restricting too many repeat APIs of the same or older transactions.

NPCI further said it has observed initiation of a high number of "check transaction status" APIs by PSP banks at a very high transactions per second (TPS).

API is a set of rules which allows different software syst...