# October 2025

## [October 21, 2025] Add an endpoint for querying symbol with isolated margin mode in futures.

Interface: /api/v2/mix/account/isolated-symbols<br/>
Changes:
- Add an endpoint for querying symbol with isolated margin mode in futures.

## [October 21, 2025] Optimization of the spot historical plan order endpoint

Interface: /api/v2/spot/trade/history-plan-order<br/>
Changes:
-The request parameters `symbol`, `startTime`, and `endTime` are changed to optional.

## [October 14, 2025] Notice: Classic Account Error Code Optimization

Scope of Impact:<br/>Classic Account v2-related APIs <br/> Optimization Content:
- Unified error code mapping: Resolves the issue where "different error codes correspond to the same error message", ensuring one code maps to one message and reducing recognition confusion.
- Standardized error message matching: Fixes the problem where "different error messages correspond to the same error code", enabling accurate matching between messages and codes and improving troubleshooting efficiency.