When you need to cancel a shipment, you can void the tracking number and the shipping label with one step.
To void a shipping label and tracking number:
In the Transaction list, select the shipments you want to cancel.
From the Actions menu, choose Shipment : Void Label.
Manager voids the tracking number for the selected transactions; any previously printed shipping label must be destroyed and not used for shipping.
If the tracking number is more than five days old, the carrier automatically deletes it, and the system cannot void it. In this case, choose Shipment : Void Non Existent Label from the Actions menu in step 2.
↑ Managing shipping and pickups
Setting up shipping accounts
Verifying shipping rates
Enabling weather forecasting
Modifying shipping details
Forcing shipping or pickup
Transactions with free shipping
Printing shipping labels
Voiding a label and tracking number
Scheduling package pickups
Package tracking details
Confirming package delivery
Managing customer pickups
Shipping best practices