Issue a virtual card for an existing cardholder. The cardholder must be in ACTIVE status.This call is accepted asynchronously. A PENDING status means the request was accepted; the final outcome is delivered as a card.activated or card.failed webhook. Do not tell your end user the card is ready until the webhook arrives.cardLimit is the cumulative spending ceiling for the card — the total the card may ever spend. It is not a prepaid balance and not a per-transaction cap. Because this release performs no pre-authorization, this value is the only real-time control over the card's exposure.