FIX Messaging - MC - Logout (Type 5)

The logout message is used to initiate and confirm the termination of a FIX session. 


Field Name


Data Type


Valid Values

Standard Header



MsgType = 5


Free format text string. If a Logout is sent as a result of authentication failure, ASX will provide a reason in this field. 

1409SessionStatusOintIdentifies the status of the FIX session. It is returned by ASX if the Logout is sent as a result of authentication failure. 
  • 3 - New session password does not comply with policy
  • 4 - Session logout complete

  • 5 - Invalid username or password
  • 6 - Account locked
  • 8 - Password expired
  • 9 - Sequence number too low

Standard Trailer MTrailer Trailer 


  • M = Mandatory field. This field is required for this message type.
  • O = Optional field. Optional fields not specified in this ASX FIX Specification will be ignored if sent. However, optional fields specified in this ASX FIX Specification will be validated.
  • C = Conditional field. This field is dependent on the field / data type.

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