====== TRADER LOGOUT [35=UCH] ======

The Trader Logout message removes an authenticated trader from the FIX session.

===== Prerequisites =====
  * Multi-Trader mode must be enabled (Tag 372=UCG)
  * Target trader must be logged in
  * No password required for logout

===== Message Specification =====

**Message Direction:** Client → T4

^ Tag ^ Field Name ^ Type ^ Req'd ^ Description ^
| | **Message Header** | | Y | MsgType = UCH |
| 109 | ClientID | String | O | Organization ID |
| 553 | UserName | String | Y | Trader to log out |
| | **Message Trailer** | | Y | |

===== Sample Messages =====

**Trader Logout Request:**
<code>
8=FIX.4.2|9=100|35=UCH|49=T4Example|56=ctsdev|50=Trader1|52=20160930-16:33:44.181|
109=CTS|553=Trader1|10=123|
</code>

**Successful Response:**
<code>
8=FIX.4.2|9=100|35=UCJ|49=ctsdev|56=T4Example|50=T4FIX|52=20160930-16:33:49.605|
553=Trader1|58=Success|10=234|
</code>

===== Notes =====
  * Failed logout doesn't disconnect session
  * Other traders remain logged in
  * FIX Logout terminates entire session
  * Response type is Trader Logout Response (35=UCJ)