@nicola.fiore
The get_data method in Eikon Data API retrieves data via Eikon so the data is similar to the data retrieved by Eikon Excel while the DataGrid service on the Refinitiv Data Platform API used by the rpd.get_data method is still in beta version.
In my opinion, The get_data method in Eikon Data API is more complete than the DataGrid service on the Refinitiv Data Platform API.