Thank you for your question, @bilzKhan042! An agent will get back to you as soon as possible. In the meantime, if any community member knows the answer, please share it here. -Jenn
vCardID is a Visa-defined unique ID of the card to produce the ApplePay provisioning card data for.
I'll get back to you on this.
When a client enrolls a card with Visa using Universal Card Enrollment API, Visa creates the card identifier (called vCardID) and shares the same with the client. Later the client will invoke in-app provisioning API passing the vCardID.