Error when payment processing using Realex

I am working on payment processing using Realex with GWT

But at the last step it gives me following error message

Using test system. Please use pre-approved test cards ONLY

Please help me.

Most payment processors i've seen use one of two approaches:

• Have a "test mode" setting in the account, and a "test mode" variable in the gateway, and only consider the charge live if neither one indicates test mode. (IIRC authorize.net works like this) OR
• Have different URLs for test vs live charges. (I'm thinking Paypal works like this...at least their IPN stuff does.)

Make sure you're using a "live" url, and that the account itself is not set for test mode.