There seems to be an issue with 0#.SSHI in codebook ... it is not pulling the values correctly ... take for Example <0#.SPX> which has 500 stock RIC under .SPX. I get like One row 
    
        
             
    
But I replace the RIC from 0#.SPX >> to 0#.SSHI .  The value looks corrupt .
    
        
             
    
I have re-worked on the code, still it is pulling incorrect instruments on 15th Jan 2020
    
        
             
    
This code is also pulling incorrect values:
import eikon as ek
import datetime
 
ek.set_app_key('DEFAULT_CODE_BOOK_APP_KEY')
index_ric = '0#.SSHI'
start_date = '2020-01-15'
end_date = '2020-01-15'
 
df, err = ek.get_data(index_ric, ['TR.ClosePrice','TR.ClosePrice.calcdate'],
{'SDate': start_date, 'EDate': end_date, 'IC': 'B'})
 
print(df)
Kindly check the issue.