# FX-SCH-A-000421

Source: https://xmlvalid.com/rules/FX-SCH-A-000421

> Value of '@schemeID' is not allowed.

- Level: error
- Rule sets: Factur-X BASIC WL rules 1.09
- Context: `/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeAgreement/ram:BuyerTradeParty/ram:GlobalID`
- Test: `string-length($codeValue5)=0 or document('FACTUR-X_BASIC-WL_codedb.xml')/codedb/cl[@id=5]/enumeration[@value=$codeValue5]`

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