# FX-SCH-A-000192

Source: https://xmlvalid.com/rules/FX-SCH-A-000192

> Element variant 'ram:TaxTotalAmount[@currencyID=../../ram:TaxCurrencyCode]' may occur at maximum 1 times.

- Level: error
- Rule sets: Factur-X MINIMUM rules 1.09, Factur-X BASIC WL rules 1.09, 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:ApplicableHeaderTradeSettlement/ram:SpecifiedTradeSettlementHeaderMonetarySummation`
- Test: `count(ram:TaxTotalAmount[@currencyID=../../ram:TaxCurrencyCode])<=1`

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