Log in to your Tea Commerce administration. Click on the Tea Commerce logo in the bottom left corner, and go to the menu Settings -> Orders -> Payment methods -> Credit card
from the dopdown menu by “Payment Provider”, and press ‘Load standard settings’ on the right (see image 1 below).
Click on the pencil by “Merchant number”, and enter your merchant number. You can find your merchant number in the ePay administration via the menu Settings -> Payment system
Click on the blue disk at the top of the page to save your settings.