Settings within Tovuti
Go to Configuration > click Payment Gateways > Click New
Give this payment gateway a Name. It is recommended that the name has a reference to Authorize.Net for easy selection.
In the Payment Gateway selector, select Authorize.Net.
In the Payment Gateway Settings section, select either Development or Production in Account Mode depending on the organization's Authorize.Net credentials.
Depending on the account mode selection, provide the organization's development or production API Login ID and Transaction Key.
Finish configuring the fields in Billing Settings as preferred.
Settings within Authorize.Net
For Authorize.net to function properly with Tovuti, it is important to ensure that a Card Code is NOT required and CIM (Customer Information Manager) is enabled within Authorize.net.
Ensure Card Code is note checked
Login to the Merchant Interface at https://account.authorize.net/.
Click Settings in the main left-side menu > click Payment Form > click Form Fields.
Uncheck the Card Code fields for "View," "Edit," and "Required."
Enable CIM (Customer Information Manager)
Please refer to the documentation provided on this process here.