fatalEN 16931EN 16931 business ruleCIIUBLBG-21BT-102BT-103
In a Document level charge (BG-21) where the Document level charge VAT category code (BT-102) is "IGIC" the Document level charge VAT rate (BT-103) shall be 0 (zero) or greater than zero.
A document level charge with VAT category IGIC (AF) has a VAT rate (BT-103) that is not allowed: it must be 0 or greater.
IGIC (Canary Islands) permits a zero or positive rate; make sure it is one of the valid IGIC rates. Or change the charge's category code so the two agree.
CII — context $VATAF_Charge
ram:RateApplicablePercent > 0
UBL — context cac:AllowanceCharge[cbc:ChargeIndicator=true()]/cac:TaxCategory[normalize-space(cbc:ID)='L'][cac:TaxScheme/normalize-space(upper-case(cbc:ID))='VAT']
(cbc:Percent) >= 0
Nothing is stored, and the whole invoice is checked, not just this rule. A PDF only works if it is Factur-X / ZUGFeRD — a PDF with the invoice XML inside it.