This guide is version 0.1 and was last updated on Oct. 8, 2021

In EPASS, there are two parts to an invoice. The invoice header, which is where you select the invoice type and fill in the customer information, and the invoice detail, which is where you sell the product, extended warranty, delivery charges, etc. The header and detail are both accessed through invoice maintenance, but they are displayed on separate screens.

Usually you would access the invoice header from the invoice maintenance screen. Clicking the add or edit button will take you into the header. Add will take you into the header to create a new invoice, and edit will allow you to modify the header of the currently selected invoice, depending on your security level.