If your terminal displays ‘MAC KEY ERROR’, proceed as follows:
- Press MENU and when the transaction menu appears, press MENU.
- Scroll to SELECT FUNCTION and press ENTER.
- Key in 32 and press ENTER.
- If prompted, Swipe your Supervisor card.
- When the prompt EFT RESET MACKEY? Appears, press ENTER.
- Select the merchant service provider you require.
(Optional check logon) - Press MENU and when the transaction Menu appears, press MENU again
- Key in 75 and press ENTER
- If prompted, swipe your Supervisor card.
- The terminal should print out a receipt stating logon successful or state acquirers that are enabled to take transactions.