CVV Error in Testing Authorize SIM

[Randall L-m]

Using the Visa card test below, I get the error below. This transaction works in Authorize.net virtual terminal.

In Zen Cart Authorize SIM setup, Request CVV Number is True.

Any Ideas why this would pitch a CVV error when any CVV should work?

Mar-28-2013 02:39:46
=================================

Response Code: 3.
Response Text: (TESTMODE) The specified security code was invalid.

Results Received back from Authorizenet: Array
(
[x_response_code] => 3
[x_response_reason_code] => 312
[x_response_reason_text] => (TESTMODE) The specified security code was
invalid.




Thanks!