BR-AG-07
In a Document level charge (BG-21) where the Document level charge VAT category code (BT-102) is "IPSI" the Document level charge VAT rate (BT-103) shall be 0 (zero) or greater than zero.
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:AllowanceCharge[cbc:ChargeIndicator=true()]/cac:TaxCategory[normalize-space(cbc:ID)='M'][cac:TaxScheme/normalize-space(upper-case(cbc:ID))='VAT']
(cbc:Percent) >= 0
Checked with Peppol BIS Billing 3.0 Invoice, Peppol BIS Billing 3.0 Credit Note, France e-invoice (UBL), France e-credit note (UBL), XRechnung 3.0 Invoice (UBL), XRechnung 3.0 Credit Note (UBL)
//ram:SpecifiedTradeAllowanceCharge[ram:ChargeIndicator/udt:Indicator=true()]/ram:CategoryTradeTax[ram:CategoryCode = 'M'][upper-case(ram:TypeCode) = 'VAT']
ram:RateApplicablePercent >= 0
Checked with France e-invoice (CII), XRechnung 3.0 Invoice (CII)
//ram:SpecifiedTradeAllowanceCharge[ram:ChargeIndicator/udt:Indicator='true']/ram:CategoryTradeTax[ram:CategoryCode = 'M']
ram:RateApplicablePercent >= 0
Checked with France Factur-X BASIC WL, Factur-X / ZUGFeRD BASIC WL