Initiates a refund for a card (FIAT) payment via Inflow.
Only payments with status PAYMENT_SUCCESS and source FIAT can be refunded.
Crypto payments cannot be refunded through this endpoint.
API key authentication. Include your API key in the X-Suby-Api-Key header:
X-Suby-Api-Key: your_api_key_hereUnique identifier of the payment to refund
Reason for the refund
500"Customer requested refund"