//cac:InvoiceLine/cac:AllowanceCharge[cbc:ChargeIndicator = true()] | //cac:CreditNoteLine/cac:AllowanceCharge[cbc:ChargeIndicator = true()][BR-44]-Each Invoice line charge shall have an Invoice line charge reason or an invoice line allowance reason code.
Hitting this rule in production? Paste the invoice into the validator or wire the API into CI so it never ships broken again.