# FX-SCH-A-000267

Source: https://xmlvalid.com/rules/FX-SCH-A-000267

> Element 'ram:SpecifiedTradeProduct' must occur exactly 1 times.

- Level: error
- Rule sets: Factur-X BASIC rules 1.09, Factur-X EN 16931 rules 1.09.2, Factur-X EXTENDED rules 1.09.2
- Context: `/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:IncludedSupplyChainTradeLineItem`
- Test: `count(ram:SpecifiedTradeProduct)=1`

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