[BR-105-GST-SG]-An Invoice that contains an GST Category code of value SR, SRCA-S, SRCA-C, ZR, SRRC, SROVR-RS, SROVR-LVG or SRLVG shall contain the Seller GST identifier (BT-31-GST) or the Seller tax representative GST identifier (BT-63-GST)
BR-105-GST-SG
cac:TaxTotal/cac:TaxSubtotal/cac:TaxCategory[contains( ' SR SRCA-S SRCA-C ZR SRRC SROVR-RS SROVR-LVG SRLVG ',concat(' ',normalize-space(cbc:ID),' ') ) ]
((//cac:AccountingSupplierParty/cac:Party/cac:PartyTaxScheme[cac:TaxScheme/(normalize-space(upper-case(cbc:ID)) = 'GST')]/cbc:CompanyID) or (//cac:TaxRepresentativeParty/cac:PartyTaxScheme[cac:TaxScheme/(normalize-space(upper-case(cbc:ID)) = 'GST')]/cbc:CompanyID))