Nuvei REST API 2.0 currently supports the following financial operations:

• Refund
  Send a POST /payments/{payment-id}/refunds request to refund a previously settled transaction.
• Void
  Send a /payments/{payment-id}/voids request to cancel Sales/Credits/APM requests/transactions, during the short time window between submitting the Sale/Credit/APM request/transaction and the moment that the Sale/Credit/APM transmission is passed.
• Auth and Settle
  The Auth-Settle process pre-authorizes available funds at the issuer (bank) and settles the transaction with a full payment, or multiple partial payments not exceeding the original authorized amount.