Can I void a UPS shipment after editing or deleting a line item that was part of the shipment?
Response:
If at least one line item in the shipment remains in the order, you may void the shipment (provided you are within the 48 hour void period) via the Shipping Labels button on the Order Detail screen in the Order Management System. Otherwise, you must void the shipment at ups.com, or otherwise contact UPS to void the shipment.
Generally speaking, it is best to void a shipment before making changes to the line items to which the shipment applies.