cannot optimize -- AIJ file <str> backed up via a no-quiet-point
  backup

  Explanation:  An AIJ file, which was backed up with a
  no-quiet-point backup, cannot be optimized, because a
  no-quiet-point backup can leave incomplete transactions in an
  AIJ file.  AIJ optimization cannot handle incomplete
  transactions within an AIJ file.

  User Action:  No user action.  This AIJ file cannot be
  optimized.