[aligned-ibrp-050-aunz]-Each Invoice line (ibg-25) MUST be categorized with an Invoiced item tax category code (ibt-151).
aligned-ibrp-050-aunz
cac:InvoiceLine | cac:CreditNoteLine
(cac:Item/cac:ClassifiedTaxCategory[cac:TaxScheme/(normalize-space(upper-case(cbc:ID))='GST')]/cbc:ID)