Message

Attribute 'schemeID' MUST be present.

Context
/ubl:OrderResponse/cac:OrderLine/cac:LineItem/cac:Item/cac:ClassifiedTaxCategory/cbc:ID
Test
@schemeID
Usage
/ ubl:OrderResponse / cac:OrderLine / cac:LineItem / cac:Item / cac:ClassifiedTaxCategory / cbc:ID