Field help (QINVDTAAMT) 

The values relate to the invoicing footer. This information can directly come from the setups of the invoice footer elements or from the customer record concerned by the selected quote.
SEEREFERTTO See the Invoicing elements documentation for further information.
The footer values can be modified. If the quote involves a prospect, only the invoicing elements coming directly from the footer elements setup are picked up.
SEEINFOThe ex-tax and tax-incl. amounts of the document are directly impacted by these values.