This is the standard RowStatus object used to create and delete rows in the ICR table; per the description, all read-create objects except rbnIcrAdminStatus become immutable once this is active(1), and reverting from active requires first setting rbnIcrAdminStatus to down. Admins create a new ICR peering by setting this to createAndGo(4) or createAndWait(5), with the row remaining notReady(3) until all required objects are configured. An admin provisioning a fresh ICR entry would set this to createAndWait(5), fill in the local/peer address and port objects, then transition it to active(1).