Well, my hopes are not high to get an answer here but I try:

Just bought an WY tkt over the internet and paid it with my Visa Debit Card issued by Kasikornbank Thailand.

For security reasons, or what ever, the number on the platic card cannot be used for internet purchase. Kasikorn issued another virtual Visa-non-plastic-card with CVV and expiry date for me.

So this "card" only exist in the computer system but not on plastic.

And this card number is in the PNR. How can I produce it upon check-in?

I got a reply from the bank I should carry a print-out of the card details. But this print-out only shows my bank account number and the number of the virtual card linked. Not the number of my plastic card. So no help.

I sent a second email. No reply. Also sent email to WY. Also no reply.

Chances are between nil and nothing, but maybe someone here encountered the same problem.

Thanks.