A read-only SnmpAdminString (1..255 chars) giving the entity string that identifies the specific network condition this notification concerns. It functions as a stable reference key an NMS can use to correlate multiple notifications about the same underlying condition, for example successive updates to the same alert. For example, an alert about a specific rogue access point would carry a cWNotificationKey that uniquely identifies that AP, letting the NMS group its raise, update, and clear notifications together.