def execute(configurations={}, parameters={}, host_name=None):
  """
  Returns a tuple containing the result code and a pre-formatted result label

  Keyword arguments:
  configurations (dictionary): a mapping of configuration key to value
  parameters (dictionary): a mapping of script parameter key to value
  host_name (string): the name of this host where the alert is running
  """

  if configurations is None:
    return (('UNKNOWN', ['There were no configurations supplied to the script.']))