I am trying to collect AUDCAD 1 month implied volatility using pyton's Eikon package. 
ek.get_data('AUDCAD1MO=R', 'IMP_VOLT')
Here is the error returned. 
(    Instrument  IMP_VOLT
 0  AUDCAD1MO=R       NaN,
 [{'code': 251658244,
   'col': 1,
   'message': "Error: Field 'IMP_VOLT' was not found in response for the instrument 'AUDCAD1MO=R'",
   'row': 0}])
I am able to collect its implied volatility from excel function. What is the correct way to fetch the data?