BR-13
An Invoice shall have the Invoice total amount without VAT (BT-109).
What the rule checks
As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.
cac:LegalMonetaryTotal
exists(cbc:TaxExclusiveAmount)
Checked with EN 16931 Invoice (UBL), EN 16931 Credit Note (UBL), Croatia eRačun Invoice (UBL), Croatia eRačun Credit Note (UBL)
//ram:SpecifiedTradeSettlementHeaderMonetarySummation
(ram:TaxBasisTotalAmount)
Checked with EN 16931 Invoice (CII)