Update API documentation and schemas: clarify lock/unlock behavior for device fields and enhance error handling in device alias update

server/api_server/api_server_start.py

@@ -585,6 +585,10 @@ def api_device_set_alias(mac, payload=None):
 
     device_handler = DeviceInstance()
     result = device_handler.updateDeviceColumn(mac, 'devName', alias)
+
+    if not result.get("success") and result.get("error") == "Device not found":
+        return jsonify(result), 404
+
     return jsonify(result)