# FX-SCH-A-000529

Source: https://xmlvalid.com/rules/FX-SCH-A-000529

> Element 'ram:Content' 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:AssociatedDocumentLineDocument/ram:IncludedNote`
- Test: `count(ram:Content)=1`

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