# UBL-SR-38-GST-SG

Source: https://xmlvalid.com/rules/UBL-SR-38-GST-SG

> Invoiced item GST exemption reason text shall occur maximum once

- Level: warning
- Rule sets: PINT SG rules (Singapore) 1.4.1
- Context: `cac:InvoiceLine | cac:CreditNoteLine`
- Test: `(count(cac:Item/cac:ClassifiedTaxCategory/cbc:TaxExemptionReason) <= 1)`

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