A card is the basic plan object around which many operations in vPlan are centered. A card is not an independent object and always has a direct relation with a collection. So if your goal is to create cards in vPlan you must first create a collection through the Collection or the Order endpoint. One collection can have a relation with many card, depending on the vPlan set-up.More information about the difference between cards and collections can be found at the vPlan help center.
