# BR-CO-03-GST-SG

Source: https://xmlvalid.com/rules/BR-CO-03-GST-SG

> Tax point date (IBT-007) and Value added tax point date code (IBT-008) are mutually exclusive.

- Level: error
- Rule sets: PINT SG rules (Singapore) 1.4.1
- Context: `/ubl:Invoice | /cn:CreditNote`
- Test: `(exists(cbc:TaxPointDate) and not(cac:InvoicePeriod/cbc:DescriptionCode)) or (not(cbc:TaxPointDate) and exists(cac:InvoicePeriod/cbc:DescriptionCode)) or (not(cbc:TaxPointDate) and not(cac:InvoicePeriod/cbc:DescriptionCode))`

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