How do I know my 4 digit UPI PIN?

Your UPI PIN is a unique four or six-digit confidential password that you set yourself to confirm bank transactions. It is not provided to you by the bank or application. If you have forgotten your existing PIN, you must reset it. To reset your PIN, you generally need to use your debit card details or, in some cases, your Aadhaar card details for verification within the payment application, such as Paytm.