These settings apply to all Unishippers accounts and can be accessed from Setup > Carrier Interfaces > Unishippers > Settings.
Reference fields allow you to print additional information on the BOL using a reference field, such as the PO# or any other information that may not usually appear in a shipment’s details. Reference fields can be mapped to StarShip shipment fields to allow you to include shipment information on the BOL. These fields are uploaded to the carrier when the shipment is processed and should show on the carrier invoice.
Unishippers support 2 Shipment Level Reference Fields.
Make sure to specify the shipment fields as reference fields by selecting them from the drop-down lists. You can type into the magnifying glass field to search for and select another shipment field.