The element is used for the reference of who ordered the products/services. Example being the name of the person ordering, employee number or a code identifying this person or department/group. Also known as "Your reference", and should also be sent in the corresponding invoice.

Namespace
cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2
Data type
Text
udt:TextType
Example value
oik987
Business terms
tir01-p002