I have been trying to retrieve historical summaries with :
import refinitiv.dataplatform as rdp
rdp.open_desktop_session( eikon_key )
df = rdp.get_historical_price_summaries( universe = ric )
the above code returns a dataframe only with certain RICs ( e.g. LCON1 or LGON1 ) but not with others (e.g. CLN1 , HON1 , RBN1 ) .
Do you know why?
thank you very much for your assistance