Hi can I check if there exists a function that checks whether an ISIN is not available in Datastream API? Currently I am just requesting for these ISINs and checking if the $$ER: E100,INVALID CODE OR EXPRESSION ENTERED is given in the Value column. Thanks.
df = ds.get_data(
tickers='US606822CR31',
fields=['CMPB', 'CMPA'],
start='2024-06-15',
kind=1
)
df