Voiding shipments and shipping labels is made simple in SKULabs.
How to void shipments on a single order:
From an orders page, scroll down to the Shipments panel. Select the shipment(s) you wish to void using the checkboxes beside them on the left side of the table, then click Void shipment(s) at the bottom right.
How to void labels and shipments for multiple orders:
From the Shipments page, select the orders you wish to void labels for, then click Actions > Void Labels.
How are voided shipments/labels refunded?
You can learn more about how labels are refunded using the link below: