BEAst: T6004, Project number. Peppol: Used by the buyer to specify a reference that should be repeated in e.g. invoice to enable the buyer to automatically book e.g. to the right project, or account.

Namespace
cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2
Data type
text
udt:TextType
Example value
1234:45435:243234
Business terms
tir01-008