The event_type_code is used to classify the different shipping events.

label_createdShipping label has been created
origin_scanFirst entry in the shipping carrier's network
transitRegular transit event
incidentAny delivery incident
out_for_deliveryPackage is out for delivery, it will be delivered today
failed_attemptUnsuccessful delivery attempt
pickup_pointPackage left at pickup point
deliveredPackage delivered or picked up from pickup point
returnPackage will be returned to sender
expiredPackage tracking has expired (Shipup is not able to track this package anymore, this is the final event)