/ubl:Invoice/cac:InvoiceLine/cac:AllowanceCharge[string(cbc:ChargeIndicator) = 'true']/cbc:BaseAmount/@currencyID

Invoice Line Charge Base Amount Currency Code

Poland | VRBL-Invoice-PL-PeppolBIS-3p0
Context ID INV1281
Usage M
Format ISO 4217 alpha-3
Final Format Path /ubl:Invoice/cac:InvoiceLine/cac:AllowanceCharge[string(cbc:ChargeIndicator) = 'true']/cbc:BaseAmount/@currencyID

Description

Syntax required attribute, value must equal invoice document currency.