# BT-138 — Invoice line allowance percentage

> https://billhorse.com/en/terms/bt-138/

The discount as a percentage of the base amount (BT-137). Informative alongside the authoritative amount BT-136.

## Where does it live in the XML?

- UBL: `cac:InvoiceLine/cac:AllowanceCharge[cbc:ChargeIndicator=false]/cbc:MultiplierFactorNumeric`
- CII: `ram:SpecifiedTradeAllowanceCharge[ChargeIndicator=false]/ram:CalculationPercent`