> ## Documentation Index
> Fetch the complete documentation index at: https://docs.deribit.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Logout(5) (Production FIX API)

> Logout(5) terminates a session on the Deribit production FIX API, describing the proper shutdown sequence and Cancel on Disconnect behavior on exit.

`Logout`(`5`) can be sent by either party in order to terminate a session. The
sending party should always wait for the echo of the logout request before they
close the socket. Closing connections in any other way is considered abnormal
behavior. Nonetheless, if `CancelOnDisconnect`(`9001`) was set at Logon, all
orders will be cancelled at Logout.

### Arguments

| Tag | Name | Type | Required | Comments |
| - | - | - | - | - |
| 58 | `text` | String | No | Free format text string specifying the logout reason. This is ignored by the server |
| 9003 | `DontCancelOnDisconnect` | Boolean | No | If `Y` then it disables `CancelOnDisconnect` for this connection even if `CancelOnDisconnect` was enabled in `Logon`(`A`) or account settings. Default - false(`N`), no changes for `CancelOnDisconnect` flag |


## Related topics

- [Logon(A) (Production FIX API)](/fix-api/production/logon.md)
- [Deribit Production FIX API Overview](/fix-api/production/overview.md)
- [Reject(3) (Production FIX API)](/fix-api/production/reject.md)
- [Heartbeat(0) (Production FIX API)](/fix-api/production/heartbeat.md)
- [Sequence Reset(4) (Production FIX API)](/fix-api/production/sequence-reset.md)