/ubl:Invoice/cac:InvoiceLine/cac:DocumentReference/cbc:ID/@schemeID

VRBL-Invoice-SI-1p0 - Invoice Line Document Reference Scheme ID

Slovenia | VRBL-Invoice-SI-1p0

Context ID	INV1217
Usage	O

Format	[UNCL 1153 subset](https://docs.peppol.eu/poacc/billing/3.0/upcoming/codelist/UNCL1153/)
Example Value	ABZ

Final Format Path /ubl:Invoice/cac:InvoiceLine/cac:DocumentReference/cbc:ID/@schemeID

Description

If it may be not clear for the receiver what scheme is used for the identifier.