BR-44
This id stands for 2 different rules, one per rule set below: Factur-X numbers its rules in each profile separately.
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.
Each Invoice line charge shall have an Invoice line charge reason or an invoice line allowance reason code.
//cac:InvoiceLine/cac:AllowanceCharge[cbc:ChargeIndicator = true()] | //cac:CreditNoteLine/cac:AllowanceCharge[cbc:ChargeIndicator = true()]
exists(cbc:AllowanceChargeReason) or exists(cbc:AllowanceChargeReasonCode)
Checked with EN 16931 Invoice (UBL), EN 16931 Credit Note (UBL), Croatia eRačun Invoice (UBL), Croatia eRačun Credit Note (UBL)
Each Invoice line charge (BG-28) shall have an Invoice line charge reason (BT-144) or an Invoice line charge reason code (BT-145).
//ram:SpecifiedLineTradeSettlement/ram:SpecifiedTradeAllowanceCharge/ram:ChargeIndicator[udt:Indicator = 'true']
(../ram:Reason) or (../ram:ReasonCode)
Checked with EN 16931 Invoice (CII)