A catalogue may contain the providing party electronic address. The address can be of any format and the format should be identified in the message. Organization number for norwegian parties

Cardinality
0..1
Namespace
cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2
Example value
123456789
Attributes
Use Name Description
M @schemeID
Rules
Identifier/Error message Flag
EUGEN-T19-R043
An endpoint identifier MUST have a scheme identifier attribute
fatal
EHF-T19-B02301
Attribute 'schemeID' MUST be present.
warning