Currently Being ModeratedJan 8, 2013 9:42 AM (in response to tara.satyawati)
Then in all probability it is invalid.
Double, double check that all the details have been accurately transcribed. If you are satisfied you have done it properly you will have to talk to your card provider.
Currently Being ModeratedJan 8, 2013 8:27 PM (in response to tara.satyawati)
The security code is the three digit number on the back to the far right. And check that your card is still valid. Hope this helps:)
Currently Being ModeratedJan 10, 2013 1:00 PM (in response to tara.satyawati)
It is the three-digit code on the back on the right. You might of entered your number wrong