Tsys Payment Gateway

Newbie question. I have the VAR Sheet from our merchant account provider (TSYS) for setting up the CC payment processing. Where do I input this information? I am not seeing any extension specifically related to Tsys.

If you don't see it in the admin extensions page or on the marketplace, it is possible the module has never been developed yet. Any official API documentation you could provide?

It is integrated with Authorize.net. Does this mean I can use the authorize.net module?

From the TSYS site:
Authorize.Net Integration for Online Credit Card Processing
Authorize.Net is one of the leading payment gateways available on the market. It meets all your credit card online processing needs without a separate credit card machine or processing software, and it’s pre-integrated with most virtual shopping carts.
Take orders through your website using the Authorize.Net Secure Order page, eliminating the need to buy your own SSL Certificate. Plus, you receive an Authorize.Net Virtual Terminal for processing credit card orders manually. TSYS offers free Authorize.Net set up and provides service for a low monthly fee.

You can use Authorize.net directly with Opencart regarding those packages:

- AIM
- CIM (Extension)
- SIM

More newbie ignorance - I have the VAR sheet, but it doesn't include a transaction key. Is this something I have to specifically get from TSYS or Authorize.net?

Contact their support service for more information on this or look it up on Google.