# BR-NL-21

Source: https://xmlvalid.com/rules/BR-NL-21

> The use of a tax point date code (cac:InvoicePeriod/cbc:DescriptionCode) is not recommended, and its value will be ignored

- 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:InvoicePeriod/cbc:DescriptionCode[$s]`
- Test: `false`

> The use of a tax point date code (/*/ram:ApplicableHeaderTradeSettlement/ram:ApplicableTradeTax/ram:DueDateTypeCode) is not recommended, and its value will be ignored

- Level: warning
- Rule sets: NLCIUS rules (CII) 1.0.3.13
- Context: `ram:DueDateTypeCode[$s]`
- Test: `false`

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