The Securities Exchange Board of India(SEBI) Vide its Circular No SEBI/HO/CFD/DIL2/CIR/P/2018/138 dated 1st November 2018 has decided to introduce the use of Unified Payments Interface (UPI) as a payment mechanism with Application Supported by Block Amount (ASBA) for applications in public issues by retail individual investors through intermediaries (Syndicate members, Registered Stock Brokers, Registrar and Transfer agent and Depository Participants). The proposed process would increase efficiency, eliminate the need for manual intervention at various stages, and will reduce the time duration from issue closure to listing by upto 3 working days.
https://www.sebi.gov.in/legal/circulars/nov -2018/streamlining-the-process-of-publicissue-of-equity-shares-andconvertibles_40923.html