To facilitate order–invoice matching an invoice may contain an identifier of an order (issued by the buyer) that the invoice relates to. An invoice may only reference one order.

Cardinality
1..1
Namespace
cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2
Example value
Ordreno. 654
Rules
Identifier/Error message Flag
NOGOV-T10-R013
An association to Order Reference SHOULD be provided according to EHF.
warning