# BR-NL-24

Source: https://xmlvalid.com/rules/BR-NL-24

> The use of a preceding invoice issue date (cac:BillingReference/cac:InvoiceDocumentReference/cbc:IssueDate) is not recommended

- Level: warning
- Rule sets: SI-UBL 2.0 rules (NLCIUS, UBL) 2.0.3.13, SI-UBL 2.0 G-account rules (NLCIUS, UBL) 1.0.2.13
- Context: `cac:BillingReference/cac:InvoiceDocumentReference/cbc:IssueDate[$s]`
- Test: `false`

> The use of a preceding invoice issue date (/*/ram:ApplicableHeaderTradeSettlement/ram:InvoiceReferencedDocument/ram:FormattedIssueDateTime/qdt:DateTimeString) is not recommended

- Level: warning
- Rule sets: NLCIUS rules (CII) 1.0.3.13
- Context: `ram:InvoiceReferencedDocument/ram:FormattedIssueDateTime/qdt:DateTimeString[$s]`
- Test: `false`

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