def METHOD_NAME():
    """
    API Endpoint to update a "trainspace" item using a trainspace ID
    Params:
      - trainspace_id: Unique trainspace id
      - requestData: A dictionary containing the other table attributes to be updated, not including trainspace_id
    Results:
      - 200: Trainspace updated successfully
      - 400: Error in updating trainspace
    """
    try:
        request_data = json.loads(request.data)
        trainspace_id = request_data["trainspace_id"]
        requestData = request_data["requestData"]
        success = updateTrainspaceData(trainspace_id, requestData)
        if success:
            return send_success({"message": "Trainspace updated", "success": success})
        else:
            return send_error("Trainspace not updated")
    except Exception:
        print(traceback.format_exc())
        return send_traceback_error()