This endpoint sets the shipment as ready-to-ship for carriers supporting the operation. This is usually useful for on-demand carrier service where the carrier only picks up the shipment once notified.
shipment_id is used as a path parameter to identify the shipment. Alternatively the client provided shipment reference (
partner_shipment_reference) can also be used instead of the
For the reverse-shipment
pending_amount are not required and will be set to