India, May 23 -- The National Payments Corporation of India (NPCI) has rolled out additional set of measures for payment service providers (PSPs) and acquiring banks to streamline UPI transactions.

In a circular issued on May 21, the NPCI outlined operational guidelines for 10 application programming interfaces (APIs) linked to UPI payments.

For the uninitiated, APIs are a set of rules or protocols that allow different software systems to communicate with each other. In case of the UPI infrastructure, PSPs like Paytm, PhonePe and Google Pay use these APIs to communicate with the UPI system which helps such platforms to initiate, process and track transactions in real time.

After a major UPI outage last month, where 2,387 users faced is...