India Unified Payment Interface (UPI) User Guide India Unified Payments Interface - UPI UPI Pay Request – Remitter Bank – Request for Debit Processing UPI Pay Request – Remitter Bank – Request for Debit Processing This section contains the following topics: ReqPay Debit – API Processing ReqPay Debit Outbound Payments Transaction Processing UPI Pay Request for Debits Outbound Transaction View Parent topic: India Unified Payments Interface - UPI