Card Verification Value (CVV)

Hi Experts,

I need to understand how the CVV is used in SAP CRM 4.0.

What config settings needs to be done for the same?

I have the following specific questions-

In config setting, Define texts for check results- do I need to define my own check results?

In the transaction, do we enter the CVV number manually in the payment form tab?

Early response would be appreciated.

thanks

Yash