What is a UPI RRN number?

A Retrieval Reference Number (RRN) is a unique 12-digit identifier generated for every UPI transaction. It acts as a digital footprint, allowing banks and payment service providers to track the status of a payment across the central NPCI system. The RRN is essential for identifying specific transactions, verifying successful transfers, and resolving disputes or failed payment issues. On the Paytm app, this 12-digit code is typically labeled as UPI Ref No and can be found in the Balance and History section under transaction details.