Receiving DFS3649A, the signon required message

The ETO user must sign on before a session can enter transactions or commands.

The user can enter the /RCLSDST command only before signing on. IMS issues message DFS3649A (indicating that a /SIGN command is required) in each of the following situations:
  • After a signon failure
  • After a signoff
  • After a logon in which no user data is entered

Any terminal user can then issue a /SIGN ON command to begin the next session.

You do not receive the DFS3649A message in any of the following situations:
  • Signon data is included in the VTAM® CINIT or BIND.
  • The session is an ISC, SLU-P, Finance, or 3270 printer session.
  • The terminal is a SLU-1 terminal running in unattended mode.
  • The terminal is the subject of an autologon attempt.