This is the Relative Name (RN), a read-only string that distinguishes one instance of a locally-scoped one-time absolute maintenance window, defined directly on this domain rather than inherited from a higher policy level from its sibling instances under the same parent container. Because UCS Manager builds each object's full DN by concatenating RNs down the management tree, this value is the local naming piece an admin needs to understand how the object is addressed relative to its parent. For example, when a fabric interconnect's own local schedule (not one pushed down from UCS Central) fires a one-time maintenance job, comparing RNs lets an admin tell apart two sibling objects of this same class that share the same parent.