To notify your buyer by email when you duplicate a payment:
- Sign in to the Merchant Back Office.
- Go to the Settings > Notification rules menu.
- Click Create a rule at the bottom of the screen.
- Click on Advanced notification.
- Select E-mail sent to the buyer for Type of notification.
- Click on Next >.
- Select Duplicated transaction by the merchant for Type of event.
- Click on Next >.
- Enter the Rule reference.
- Click on Create.