Modify the invoice layout

You include the Discount/surcharge over invoice total field in the invoice layout.

Note: 

There is a default invoice layout available that already includes the combined discounts. Instead of modifying your own invoice layout you can also choose to link this new invoice layout to the sales contact profiles.

To modify an invoice layout: 

1. Go to: Order Management / Output / Management / Report.
2. Open the properties of the invoice layout.
3. Click bottom left on Modify.
4. Go to: Sales invoice / Amounts.
5. Select the Discount/surcharge over invoice total field and add it to the fields in the data collection by clicking on the >.
6. Click on: Next. 
7. Click on: Yes. 
8. Click on: Next. 
9. Click on: Next. 
10. Click on: Finish. 

    The Discount/surcharge over invoice total field has now been added to the fields in the detail section.

11. Now drag this field to the desired position on the invoice.
12. Save the report.

If you now create a packing slip, report it ready and make an invoice for it, at the bottom of the layout the combined discount is displayed: