The system allows to process a chargeback and refunds for your credit card payments.
Chargeback vs. Refund. Which should I use?
If you want to cancel a credit card payment (only in Komet) when the payment didn't go through or the transaction was failed, you should process a charge back. On the contrary, if you want to process a refund to the customers' card (in case the item was not received by your customer, for instance, you should process the transaction as a CC Refund - Full).
Important
In order to return the whole amount of the transaction to the customer's card, refunds should be carried out the same date of the payment date. On the contrary, the credit card processor and credit card processor may apply fees for the transaction.