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

Invoice Line Document Reference Scheme ID

Austria | VRBL-Invoice-AT-B2G-UBL-1p0
Context ID INV1217
Usage C
Usage Description

Becomes mandatory, when a BBG contract number is provided as Invoice Line Document Reference ID.
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.

For Austrian B2G invoices use VRBL:AT:BBG-GZ to provide the BBG contract number. For B2B use optionally any code from UNCL 1153 subset