This is used to enable creating, deleting, and modifying this row. It is the RowStatus control specifically for a priority-mapping table row, distinct from the main VC row's own RowStatus, letting an admin add or remove individual priority-to-VC mapping entries without tearing down and recreating the underlying pseudowire itself. For example, an admin adding a new priority class to an existing, already-active pseudowire's COS mapping would create a new row here and set it active without touching cpwVcEnetRowStatus on the main VC entry at all.