# FX-SCH-A-000466

Source: https://xmlvalid.com/rules/FX-SCH-A-000466

> Value of '@format' is not allowed.

- Level: error
- Rule sets: Factur-X BASIC WL rules 1.09
- Context: `/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeSettlement/ram:InvoiceReferencedDocument/ram:FormattedIssueDateTime/qdt:DateTimeString`
- Test: `string-length($codeValue21)=0 or document('FACTUR-X_BASIC-WL_codedb.xml')/codedb/cl[@id=21]/enumeration[@value=$codeValue21]`

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