Refunds can be made either in full or in part.
You can refund the entire amount that you received in the payment.
You can refund part of the amount received in the payment. You can issue multiple, partial refunds as long as their sum does not exceed the captured amount.
A payment moves to the
refunded state only when the entire amount is refunded to the customer. In case of partial refunds, the payment continues to remain in the
captured state till the entire payment is refunded.