Why for some underlying I haven't an output without error for the following code ?
( Instrument OPTIONS
0 NOKIA.HE NaN,
'message': "Error: Field 'OPTIONS' was not found in response for the instrument 'NOKIA.HE'",
For the fifty underlying of .STOXX50E I have 13 underlying with this error.
Different venues may have different data behavior.
For the sample data, you can see that .MC or .I or .HE venues do not provide the "OPTIONS" field.
Please contact the Refinitiv Content Helpdesk to get help on how to get OPTIONS chain RIC for the RIC you are interested in.