def failed_add_fav_msg(bus_stop_code):
    """
    Message that will be sent if user gives an invalid bus stop code and tries to add it to favourites
    """
    return '{} is not a valid Bus Stop Code! \n\nTo add to favourites, ' \
           'type: /add_favourites [BUS STOP CODE]\n\n  e.g: /add_favourites 14141'.format(bus_stop_code)