开云体育

I'm not quite sure if this is the right group, because there are two API options (via TWS and via Client Portal API). ?I am looking for?
https://www.interactivebrokers.com/campus/trading-lessons/requesting-market-data/

and can also retrieve conid's for given symbols.
But if I now use?
/iserver/secdef/info/
to retrieve data for a symbol I only get
Error 404 - File not found
Does this perhaps only work if you have paid for market data? Otherwise there is only cash on my securities account...?

?

Best regards

joh