The Refund API enables merchants to return funds back to the original payer’s account. This can be done in two ways: 1. Refund by amount: specify a partial or full amount to be refunded. 2. Refund by transaction reference: specify a particular pay-in transaction, and the system will process the refund directly to the corresponding payer account.This ensures a seamless reversal process, fully compliant with payment regulations, while maintaining transparency for both merchants and customers.