# BR-TMP-6

Source: https://xmlvalid.com/rules/BR-TMP-6

> Datumsangaben in UBL müssen im Format JJJJ-MM-TT (YYYY-MM-DD) übermittelt werden.

- Level: warning
- Rule sets: XRechnung 3.0 rules (UBL) 2.6.0
- Context: `cbc:IssueDate | cbc:DueDate | cbc:StartDate | cbc:EndDate | cbc:ActualDeliveryDate | cbc:IssueDate | cbc:TaxPointDate | cbc:PaymentDueDate`
- Test: `matches(normalize-space(text()), '^\d{4}-\d{2}-\d{2}$')`

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