Virtual cards are a temporary credit card issued by the OTA and passed to the property to pay for the guests booking. This generally occurs when the guests pays the OTA (at the time of the booking).
Booking.com sends VCC balance in the confirmed reservation
When VCC balance is updated, Booking.com sends a notification with the new VCC balance
Channel Manager will then modify booking to display the new VCC balance.
VCC modification added in Additional Info section of booking (e.g Modification: VCC balance updated to 100 amount). Note OTP required to view