I had SMS set up using following template (below). Now I see that {PAYCCTYPE} {PAYCCNUM} are not rendering. I though I had those rendering before???:
Reminder about your final payment for your reservation at {PDISPNAME}. {BSPAMT} is due {BSPDAYSFN} on {BSPDATE}. If you paid by a credit card and you want your balance payment charged automatically, then no action is needed - card on file {PAYCCTYPE} {PAYCCNUM} will be charged on {BSPDATE}. If you want to pay by a different credit card, or to pay by other means, then please click link {BUPAY}.
Thank you ~ {MYFULL} ~ bluemountaincabins.com
The PAY fields are only available in context of a particular payment, for example for a payment receipt.
They're not available on booking level templates, as there could be multiple different cards on file for a given booking.