backing up after-image journal sequence number <num>

  Explanation:   The  created  after-image  backup  file  will  be
  internally  identified with the indicated sequence number.  When
  AIJ files are rolled  forward,  the  roll-forward  utility  will
  prompt for specific AIJ sequence numbers.  The AIJ file sequence
  number should be included as a component of  any  external  file
  identification information, such as magtape labels.

  User Action:  No user  action  is  required.   This  message  is
  informational only.