/ubl:Invoice/cac:TaxTotal[cbc:TaxAmount/@currencyID = ../cbc:DocumentCurrencyCode]/cac:TaxSubtotal/cec:UBLExtensions/cec:UBLExtension/cec:ExtensionContent/vrbl:TaxSubtotalExtension/vrbl:VatMechanism

Invoice Tax Subtotal VAT Mechanism

Context ID INV1045
Cardinality 0..1
Usage -