currently modified area  header  fields  must  be  committed  or
  rolled back

  Explanation:  You attempted to issue  an  EXIT  command  without
  either  committing  or  rolling  back  currently modified header
  fields for area files.

  User  Action:   Issue  a  COMMIT  command   to   write   current
  modifications  back  to  the  database  or a ROLLBACK command to
  ignore all current modifications.  Then issue an EXIT command.