This RowPointer, accessible only as part of a notification, carries the OID of the table row whose entry has been changed, as reported in a config-change trap. Admins use this varbind to identify exactly which table row (rather than which scalar object) was modified when the change notification fires for a tabular configuration item. For example, prvtConfigChangeAlarmRow pointing to a specific VLAN table row tells the admin which VLAN's configuration entry was just edited.