# FX-SCH-A-000336

Source: https://xmlvalid.com/rules/FX-SCH-A-000336

> Element 'ram:IncludedTradeTax' may occur at maximum 1 times.

- Level: error
- Rule sets: Factur-X EXTENDED rules 1.09.2
- Context: `/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:IncludedSupplyChainTradeLineItem/ram:SpecifiedLineTradeAgreement/ram:NetPriceProductTradePrice`
- Test: `count(ram:IncludedTradeTax)<=1`

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