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@anbezhilasokan.frm So this is a two step operation as the chain is not being resolved directly in the get_data function that contains non-realtime fields. Pls try:
df, err = ek.get_data(['0#A.NS'],'CF_NAME') df
this chain is resolved with only realtime fields. You can then use the instrument column in the second API call:
df1,err = ek.get_data(df['Instrument'].tolist(),['CF_LAST','DIVIDEND','TR.IVIntrinsicValue']) df1
I hope this can help.