# Zoom Phone client_code deprecation Phone API updates ensure efficient and secure access to data. As part of these updates, we will deprecate the **client_code** field in the response body of the [/phone/call_history](/docs/api/phone/#tag/call-logs/GET/phone/call_history), in June 2025. Additionally, the [phone/call_history/\{callLogId\}/client_code](/docs/api/phone/#tag/call-logs/PATCH/phone/call_history/{callLogId}/client_code) will only support adding a user **client_code** and will not allow adding an admin log. ## Changed - Deprecating the `client_code` response field in this Phone API: `GET /v2/phone/call_history` - Restricting `client_code` assignment to user logs only this Phone API: `PATCH v2/phone/call_history/{callLogId}/client_code`