Unable to add credit card in Google Wallet Whenever I try and buy an app, google asks me to add a credit card in google wallet. But when I finish adding me credit card details, phone number and address and do save (I'm using my sony xperia mobile for this btw) I get an error saying:

Error:
Error while retrieving information from server. [RPS:S-7:AEC-0]


What might be the problem?
Now the RBI has given instruction to all banks to make changes in the server to give the transaction password while doing net purchase. there is no option in google wallet to put transaction password.