cannot  backup  current  AIJ  journal  if  no  other  unmodified
  journals exist

  Explanation:  An  attempt  was  made  to  backup  the  "current"
  after-image   journal,   but  no  other  unmodified  after-image
  journals  are  available.   This   situation   occurs   when   a
  "by-sequence"  backup  is performed in the wrong order; that is,
  the current after-image journal was backed up when a  "modified"
  lower sequence after-image journal exists.

  User Action:   Backup  the  lower-sequence  after-image  journal
  first.