Message

The Item standard identifier (BT-157) shall have a Scheme identifier.

Context
cac:InvoiceLine/cac:Item/cac:StandardItemIdentification/cbc:ID | cac:CreditNoteLine/cac:Item/cac:StandardItemIdentification/cbc:ID
Test
exists(@schemeID)
Usage
/ ubl:Invoice / cac:InvoiceLine / cac:Item / cac:StandardItemIdentification / cbc:ID
/ ubl:CreditNote / cac:CreditNoteLine / cac:Item / cac:StandardItemIdentification / cbc:ID