This reports the severity tier, minor, major, or critical, of the specific threshold configuration that triggered this ERM violation notification. Since a single resource can have multiple severity tiers configured simultaneously, this field is what lets the trap receiver distinguish, without additional lookups, whether an incoming violation trap represents a minor early warning or a critical near-exhaustion condition. An incoming violation trap carrying this field set to critical tells the receiving NMS to escalate immediately, versus the same trap type carrying minor, which might just get logged.