We just add the Clover Mini 2 and attached a Clover Mini Keypad. There is a toggle button that allows you to switch between sales and refunds. On the first day of using the new card reader, one of the users accidentally changed from sale to refund and processed 2 transaction before realizing the error.

There is no way to disable the refund functionality on the Clover Mini Keypad (I spoke with the Clover Technical group that confirmed the refund feature could not be disabled). We like using the keypad to push the credit card amount to the Clover Mini. However this added functionality increases the risk of processing a sale as a refund. I expect there are 99+% sales and less than 1% refunds.

My suggestion is to add a confirmation step when a refund is selected. ..Are you sure you want to process a refund? Please confirm by selecting the Yes button, otherwise select the No button. Or add back the option to be able to disable the refund feature on the Mini Clover keypad