post https://sandbox.shipmonk.dev/v1/integrations/sandbox/complete-order
This endpoint simulates warehouse shipment of an order on Sandbox environment. After the order is completed, we send a shipment notification if set. It can't be used in production!
Order must be valid and submitted (available inventory, valid address, valid shipping method).
By default there is 20 minutes delay between the order being shipped and the event of sending