The reason of the status expressed as a code.

Namespace
cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2
Data type
udt:CodeType
Example value
80
Attributes
Use Name Description
M @listID

Example value: zzz

Rules
Identifier/Error message Flag
PEPPOL-T127-B02801
Attribute 'listID' MUST be present.
fatal