//cac:InvoiceLine/cac:AllowanceCharge[cbc:ChargeIndicator = true()] | //cac:CreditNoteLine/cac:AllowanceCharge[cbc:ChargeIndicator = true()][BR-43]-Each Invoice line charge (BG-28) shall have an Invoice line charge amount (BT-141).
Hitting this rule in production? Paste the invoice into the validator or wire the API into CI so it never ships broken again.