The UTR number (Unique Transaction Reference number) is a unique reference code that is attached to every transfer sent to India.
On the recipient bank statement, the UTR number is visible on the received transfer. The exact format of the number can differ according to payment method.
The UTR number can also be used to trace a payment if the money hasn't been received. If that's the case, and your transfer has been held up, please download your .pdf transfer receipt (click on your transfer in Activity, then on "View transfer details", then "Get PDF receipt"). The UTR number will be under "Additional reference on Bank Statement".