/reverse_payment

Use the /reverse_payment endpoint to either cancel or refund a payment. Set void_if_not_settled to true to completely cancel a payment that has not settled. The cutoff times for the cancellation window varies by card network and your site’s ACH submission timelines. Settled payments must be refunded by submitting the refund_amount and refund_currency parameters. This call gives you the ability to refund both full and partial amounts.