This is the relative name of this fault-suppression task, the short identifier distinguishing it from other tasks queued or running under the same domain. Suppression tasks are typically named or numbered as they are created, so the RN is how an admin picks the right task out of a list when several maintenance windows have been scheduled. For example, an RN of 'task-4' tells an admin looking at a list which specific suppression task's other properties (state, scheduler, policy name) they are viewing.