BR-26 — Missing item net price
What it means
Each invoice line must state an item net price. This price, together with the quantity, makes up the line amount (see BR-24).
How to fix it
Check that the Price section of each line has a PriceAmount element
filled in with the price excluding VAT per unit.
Example
Wrong: the Price section has no PriceAmount element.
Correct: <cac:Price><cbc:PriceAmount currencyID="EUR">50.00</cbc:PriceAmount></cac:Price>.