TransFirst (TC or TXP)

SmithCart > Payment Gateways

When the “TransFirst” gateway option is selected in the BuyNow settings the following required fields are displayed:

 
Merchant ID - This is a required field for the gateway.  Merchant ID is a unique id that identifies you with the gateway provider. 
 
Reg Key - This is the gateway password and is a required field.  Authorize.net refers to this as a Transaction Key.