We are using cron scheduler , for which we have to give the cron expression .

As per our requirement pipeline has to run for every 15 mins

is the below cron expression is correct for the pipeline to run for every 15 mins.

if not please suggest the changes

Cron expression used in the pipeline : 0 /15 * * * * *

but when i do the test run pipeline it is not working, can anyone explain how cron scheduler works and mentioned above cron expression is correct or not