Errors happen, and you will often need to change your shipment details. In ShipTurtle, you can easily cancel a shipment and create a new one. Cancelling a shipment in ShipTurtle will also cancel it with your courier partner automatically, as long as the label has been generated in ShipTurtle itself. So, in case you have created the shipment elsewhere, assigned the tracking number to an order in ShipTurtle and then cancelled the shipment, ShipTurtle will not auto-cancel it at your courier partner’s end.