The values relate to the invoicing footer. This information can directly come from the setup of invoicing footer elements, from the record of the given customer or from the selected order.
See documentation of Invoicing elements for further information.
The footer values can be modified. The ex-tax and tax-incl. amounts of the document are directly impacted by these values.
If a delivery is modified by deleting an order or one or several lines from an order, the amounts of the invoicing elements are not re-calculated and so deleted lines or orders are not taken into account: the invoicing elements related to these orders or lines are not taken from this modified delivery.
