Message

Attribute 'schemeID' MUST be present.

Context
/ubl:Invoice/cac:AccountingCustomerParty/cac:Party/cac:PartyLegalEntity/cbc:CompanyID
Test
@schemeID
Usage
/ ubl:Invoice / cac:AccountingCustomerParty / cac:Party / cac:PartyLegalEntity / cbc:CompanyID