Once you have installed the MasterCard Payment Gateway Services extension, you can then configure it. To configure the extension, you first need to log into your Magento Admin Panel.

In the Magento Admin Panel, select Stores > Configuration

In the Configuration menu, expand the Sales menu and select the Payment Methods option.

You will then see the MasterCard module, where you’ll be able to select an integration method and configure it according to your needs.

This page relates to version 103.2.4

Looking for the Magento 1 version? Find it here.