This object carries a free-form ASCII text string included as supplementary information in an MRV device's SNMP trap/notification, without the MIB specifying exactly what content goes into it beyond being descriptive text. Administrators reading a trap containing this object get whatever human-readable detail the device chose to attach to that specific event. For example, an intrusion-related trap might populate this object with a message like 'Unauthorized access attempt detected on console port'.