Global discount workaround for Buy doc.

Currently we dont have a global discount field where you can apply the total amount of discount to the bills.

One workaround you can try is to create 1 Non-tracked product.
Set the Purchase account to your Discount account

- pls note this approach will make your Books become a Gross Discount method for this transactions (where Discount is booked in the Financial Report - currently Deskera's default is Net Discount method)

Then on the Bills form, you call this Non-tracked product,
set the qty to 1,
and then set the unit price to the amount you want - dont forget to add a negative sign on the unit price column.