Here you can learn about how to add the reference no. in a Invoice.
1. Login with Fresa Gold, Open a Job/Shipment (Fig.1).
2. Click Edit icon of the client organization (Billing Party) in the Organization Tab (Fig.2).
3. Select the Reference type as Reference no and enter the Reference number and click Save changes button (Fig.3).
4. Now if you generate a invoice report the Reference number of the billing party will reflect in the report (Fig.4).
Hope you got an idea about how to add the Reference number in the invoice.