Message

Each Document level allowance (BG-20) shall have a Document level allowance amount (BT-92).

Context
/ubl:Invoice/cac:AllowanceCharge[cbc:ChargeIndicator = false()] | /cn:CreditNote/cac:AllowanceCharge[cbc:ChargeIndicator = false()]
Test
exists(cbc:Amount)
Usage
/ ubl:Invoice / cac:AllowanceCharge / cbc:Amount
/ ubl:CreditNote / cac:AllowanceCharge / cbc:Amount