# FX-SCH-A-000315

Source: https://xmlvalid.com/rules/FX-SCH-A-000315

> Element 'ram:LanguageID' may occur at maximum 1 times.

- Level: error
- Rule sets: Factur-X EXTENDED rules 1.09.2
- Context: `/rsm:CrossIndustryInvoice/rsm:ExchangedDocument`
- Test: `count(ram:LanguageID)<=1`

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