TSYS GATEWAY
To use Tsys as the payment gateway, obtain Tsys credentials from your Merchant processors. Once the Tsys network is set up, they will create the Tsys Gateway. The merchant is sent an email with the login credentials (this takes 24 to 48 hours to receive from Tsys).
To integrate the Tsys processing into the system, go to Configuration>Payment Settings>Payment Gateway and enter the necessary credentials, save.
For the Reseller only:
Sample Tsys Var Sheet
Sample Transit Pass Build