On the Reference tab in the Shipping window, you can specify up to five reference numbers.
To specify a reference number:
Type the reference number on the Reference tab.
Select the Use On All Packages check box if you want to use the reference number on all packages in the shipment.
To set defaults for the Reference Number boxes:
To change the title of the Reference Number boxes on the Service and Reference tabs for a specific customer, use the Address Book Editor. See Change the Reference Number Box Titles for a Customer.
To change the title of the Reference Number boxes on the Service and Reference tabs for all customers and set specific choices for the renamed boxes, use the Charge Back Code Editor. See Set Up a Charge Back Code.
To create a custom reference qualifier to use in the Address Book Editor and the Charge Back Code Editor, use the Reference Qualifier Editor. See Add a Custom Reference Qualifier.