BR-NG-01-GST-SG

An Invoice that contains an Invoice line (BG-25), a Document level allowance (BG-20) or a Document level charge (BG-21) where the GST category code (BT-151-GST, BT-95-GST or BT-102-GST) is "NG" shall contain exactly one GST breakdown group (BG-23) with the GST category code (BT-118) equal to "NG".

error: the document is invalid

What the rule checks

As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.

Context
/ubl:Invoice | /cn:CreditNote
Test
((exists(//cac:TaxCategory[cac:TaxScheme/normalize-space(upper-case(cbc:ID))='GST']/cbc:ID[normalize-space(.) = 'NG']) or exists(//cac:ClassifiedTaxCategory[cac:TaxScheme/normalize-space(upper-case(cbc:ID))='GST']/cbc:ID[normalize-space(.) = 'NG'])) and (count(cac:TaxTotal/cac:TaxSubtotal/cac:TaxCategory[cac:TaxScheme/normalize-space(upper-case(cbc:ID))='GST']/cbc:ID[normalize-space(.) = 'NG']) = 1)) or (not(//cac:TaxCategory[cac:TaxScheme/normalize-space(upper-case(cbc:ID))='GST']/cbc:ID[normalize-space(.) = 'NG']) and not(//cac:ClassifiedTaxCategory[cac:TaxScheme/normalize-space(upper-case(cbc:ID))='GST']/cbc:ID[normalize-space(.) = 'NG']))

Checked with PINT SG Invoice, PINT SG Credit Note