Use cart.deliveryGroups.groupType in Function APIs to determine the type of delivery group

With the 2025-07 version release of the Function APIs, you can now use the cart.deliveryGroups.groupType to determine the type of delivery group. The groupType field indicates whether the delivery is a one-time purchase (ONE_TIME_PURCHASE) or part of a recurring subscription (SUBSCRIPTION).

Delivery groups streamline fulfillment by organizing items that can be shipped together, based on the customer's shipping address. For example, if a customer orders a t-shirt and a pair of shoes that can be shipped together, then the items are included in the same delivery group.