# FX-SCH-A-001041

Source: https://xmlvalid.com/rules/FX-SCH-A-001041

> Element variant 'ram:SpecifiedTaxRegistration[ram:ID/@schemeID="VA"]' 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:ItemSellerTradeParty`
- Test: `count(ram:SpecifiedTaxRegistration[ram:ID/@schemeID="VA"])<=1`

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