def get_heat_required_input(data):
    """Returns Heat required user input fields."""
    heat_params = []
    heat_param_dict = data['parameters']
    for key, heat_param in heat_param_dict.items():
        heat_params.append([key, heat_param.get('type'), heat_param.get(
            'default'), heat_param.get('description')])
    return sorted(heat_params)
