# February 2025

## [February 19, 2025] Add a description for instId in the public channel for Margin.

Changes content:
-  Add a description for instId in the public channel for Margin. Only supports:`default`

## [February 18, 2025] Add the userId response field to the broker sub-account recharge records.

**Endpoints:** :/api/v2/broker/subaccount-deposit <br/>
Changes content:
- Add the userId response field to the broker sub-account recharge records.

## [February 7, 2025] Add instructions for using the classic account simulation environment.

Additional content:
- Instructions for subscribing to simulation environment messages via Websocket.
- Instructions for using RestApi to conduct API trading in the simulation environment.

## [February 3, 2025] New addition to futures error codes:

Additional content:
- New contract error `code 22067` has been added, meaning: "Operations are prohibited during ADL processing."