Boxc Shipments API
The Shipments resource allows a user to create, update, retrieve, and delete shipments. Only test shipments and shipments without labels can be deleted. Shipments with uncancelled or processed labels cannot be updated. All shipments require address verification on the shipping address. Cancelling a label will refund the cost. Test shipments and shipments without labels are routinely purged from the system. There are some weight and volumetric constraints for shipments that is dependant on the route. For example, if a Shipment's length + girth is greater than a certain size then the user is charged an additional fee per KG. The length is the measurement of the longest dimension, and girth is the distance around the thickest part (perpendicular to the length). If the Shipment's weight or volume exceeds the limit for a route an error will be returned. **Note:** Set the `overpack_id` to null when unassigning it from an overpack. You won't be allowed to update a labelled shipment beyond that.