EMAIL_MESSAGE : When all items types are DIGITAL_PRODUCT , if an item of another type is present, the call will 400. SHIPMENT : When all items types are PHYSICAL_PRODUCT , if an item of another type is present, the call will 400. If the order does not contain any shipping method, the call will 400. PICKUP : When all items types are PHYSICAL_PRODUCT , if an item of another type is present, the call will 400. If the order does not contain any pickup information, the call will 400.