can `instrument_token` values get repeated

anwoy

Hi,
can an instrument be assigned an instrument_token value which has already been used previously for another instrument in a previous time?

sujith

Yes, exchanges keep doing that all the time. The correct primary/unique key is the combination of exchange:tradingsymbol

rakeshr

Yes, exchange tokens are re-used multiple times, especially in different segments. So, it's recommended to fetch the instrument file at the start of the trading day.