BEAst: Drawing number (T6222). Peppol: Reference to an external document (ID) when it is necessary to specify the details of the item.

Namespace
cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2
Data type
Document reference
udt:IdentifierType
Example value
doc4353.pdf
Business terms
tir01-p007