when I use the code below I get this errors:
raise RDError(-1, except_msg)
refinitiv.data._errors.RDError: Error code -1 | Unable to resolve all requested identifiers in ['SCREEN(U(IN(DEALS)/*UNV:DEALSMNA*/), BETWEEN(TR.MnAAnnDate,20200101,20200108)/*dt:Date*/, CURN=USD)'].
#start_date start_date="20200101" #end_date end_date="20200108" #universe universe=f'SCREEN(U(IN(DEALS)/*UNV:DEALSMNA*/), BETWEEN(TR.MnAAnnDate,{start_date},{end_date})/*dt:Date*/, CURN=USD)' #fields fields=["TR.COMMONNAME"] #rd.get_data df_i=rd.get_data( universe=universe, fields=fields, #parameters=None, #use_field_names_in_headers=None, ) #print print(df_i) #close_session rd.close_session() print("done")