Issue
Page totals on the Sales Invoice Layout
Solution
The group "transport" can only be used once on the layout. The expression which should be used is
"invoice_tot_amt_ex_vat_in_inv_disc".
At the bottom of the invoice the total that is transported should be printed as well. Now you need to use the group "subtotal" with the same expression:
"invoice_tot_amt_ex_vat_in_inv_disc".
So functional you use the group transport on top of the page and subtotal on the bottum of the page.