What is the 6 digit UPI number?

A UPI PIN is a unique 4 or 6-digit code essential for confirming all bank transactions made through a UPI-enabled platform. It acts as a security measure to approve payments and prevent unauthorized access after linking a bank account to a UPI application. While some banks support a 4-digit PIN, a 6-digit UPI PIN is commonly used for stronger security. Users need the last 6 digits and expiry date of their debit card to set up this PIN initially.