TRADER LOGON RESPONSE [35=UCI]
The Trader Logon Response message confirms or rejects Trader Logon attempts.
Response Indicators
- Success: Text (58) = “Success”
- Failure: Text (58) = Error description
- Failed logon doesn't disconnect FIX session
Message Specification
Message Direction: T4 → Client
| Tag | Field Name | Type | Req'd | Description |
|---|---|---|---|---|
| Message Header | Y | MsgType = UCI | ||
| 553 | UserName | String | Y | T4 Trader username |
| 58 | Text | String | Y | Success or failure reason |
| Message Trailer | Y |
Sample Messages
Successful Response:
8=FIX.4.2|9=100|35=UCI|49=test|56=T4Test|50=T4FIX|52=20150612-15:35:03.725| 553=Trader1|58=Success|10=234|
Failed Response (Bad Password):
8=FIX.4.2|9=150|35=UCI|49=test|56=T4Test|50=T4FIX|52=20150612-15:34:50.261| 553=Trader1|58=Login failed: most likely incorrect trader and password combination|10=234|
Notes
- Session continues after failed trader logon
- Master User and other authenticated traders remain connected
- Trader must have assigned accounts/exchanges for success