non-system concealed device name in filename

  Explanation:  Concealed device names  must  be  defined  in  the
  system logical table.

  User Action:  If the device name has to be concealed, define  it
  in  the  system  logical  table  (LNM$SYSTEM_TABLE)  or  in  the
  cluster-wide system logical name table (LNM$SYSCLUSTER_TABLE).