# FX-SCH-A-000207

Source: https://xmlvalid.com/rules/FX-SCH-A-000207

> The Item gross price (BT-148) shall NOT be negative.

- Level: error
- Rule sets: Factur-X BASIC rules 1.09
- Context: `//ram:IncludedSupplyChainTradeLineItem`
- Test: `(ram:SpecifiedLineTradeAgreement/ram:GrossPriceProductTradePrice/ram:ChargeAmount >= 0) or not(ram:SpecifiedLineTradeAgreement/ram:GrossPriceProductTradePrice/ram:ChargeAmount)`

Validate a document against these rules: https://xmlvalid.com/validate