# FX-SCH-A-000549

Source: https://xmlvalid.com/rules/FX-SCH-A-000549

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

- Level: error
- Rule sets: Factur-X EN 16931 rules 1.09.2
- Context: `/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:IncludedSupplyChainTradeLineItem/ram:SpecifiedLineTradeSettlement/ram:SpecifiedTradeSettlementLineMonetarySummation`
- Test: `count(ram:LineTotalAmount)=1`

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