Frisbii Transform offers the possibility to handle chargebacks manually.
Navigate to "Activities > Account Reconciliation" and click on the "Add" button on the right.
Choose "Chargeback" as the booking type.
Enter the name of the customer.
Use the ID of the payment transaction (for example, ''Transaction: xxxxx'') as a purpose.
Enter the full amount including handling fees (for example, -100).
Click on ''Continue''.
The chargeback should automatically be assigned to the contract. If it didn't happen, you have to assign the back posting manually: Manual intervention after import of reconciliation files