Message

Invoice tax schemes MUST be 'VAT'

Context
cac:TaxScheme/cbc:ID
Test
normalize-space(.) = 'VAT'
Usage
/ ubl:Invoice / cac:TaxRepresentativeParty / cac:PartyTaxScheme / cac:TaxScheme / cbc:ID
/ ubl:Invoice / cac:AllowanceCharge / cac:TaxCategory / cac:TaxScheme / cbc:ID
/ ubl:Invoice / cac:TaxTotal / cac:TaxSubtotal / cac:TaxCategory / cac:TaxScheme / cbc:ID
/ ubl:Invoice / cac:InvoiceLine / cac:Item / cac:ClassifiedTaxCategory / cac:TaxScheme / cbc:ID