WPG

For more information about this gateway, please refer to https://developer.worldpay.com/docs/wpg

To use the sandbox mode:

Proceed to the Sandbox Merchant area login and enter your username and password. Once you login, toggle the setting in the left panel to "Test Mode".

To add a WPG gateway, use the following settings:

{
"username": "API key username",
"password": "API key password",
"merchantcode": "account ID"
}

Gateway Specific Fields

"gatewaySpecificFields":{
    "worldpay_dot_com":   {
        "authenticated_shopper_id": "shopper id"
    }            
}