The type of reference that cannot be specified by a code. At least one of Document Type Code and Document Type must be used.

Namespace
cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2
Data type
Text
udt:TextType
Example value
FreightPayersCustomerNumber
Business terms
tir16-p050
Rules
Identifier/Error message Flag
PEPPOL-T120-R031
AdditionalDocumentReference SHALL contain a Document Type Code or a Document Type.
fatal