# FX-SCH-A-000950

Source: https://xmlvalid.com/rules/FX-SCH-A-000950

> Attribute '@format' is required in this context.

- Level: error
- Rule sets: Factur-X EXTENDED rules 1.09.2
- Context: `/rsm:CrossIndustryInvoice/rsm:SupplyChainTradeTransaction/ram:ApplicableHeaderTradeSettlement/ram:SpecifiedAdvancePayment/ram:FormattedReceivedDateTime/qdt:DateTimeString`
- Test: `@format`

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