This object identifies which CoS mapping table entry to use for this static encap tunnel, valid only when the frame CoS policy is set to the mapped option, as the description states, pointing to a specific row in the cienaCesTceDpTsCosMapFcosMapTable. An admin uses this to confirm exactly which translation table governs how incoming 802.1p priorities get converted into MPLS EXP/TC markings for this specific tunnel, which matters when different tunnels need different QoS treatment policies. For example, a map ID of 12 points to a specific table row that might translate voice traffic's priority 5 into MPLS TC value 5, while a different tunnel's map ID could apply a completely different translation.