In Codebook, the Python commands:
import refinitiv.data as dl
dl.open_session()
ISINs=['DE000A11QTD2']
RICs=dl.discovery.convert_symbols(ISINs).loc[:,'RIC']
produce an error when an ISIN of an expired bond (e.g. DE000A11QTD2) is specified. However, it works for not expired bonds.
What can be done so that the command works with expired and non-expired bonds at the same time?