OrderDisplayFulfillmentStatus now returns FULFILLMENT_NOT_REQUIRED for orders with no items to fulfill

As of API version 2026-10, the OrderDisplayFulfillmentStatus enum can return a new value: FULFILLMENT_NOT_REQUIRED . It is returned for orders that are not fulfilled but have no items remaining to fulfill — for example, an order that was fully cancelled or fully refunded before any items were fulfilled. Previously, these orders returned UNFULFILLED .