Access Brightspace API using client credentials flow

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Are we able to access Brightspace API using client credentials flow?

API eg: https://peelpd.brightspace.com/d2l/api/le/1.41/1111/calendar/events/

I tried to generate access token on postman using client credential flow but getting following error.

Error: invalid_request, Description: Missing "client_assertion" parameter

Following article describe how to access API use Authorization flow but we need to use client credentials flow to create our own API

https://community.d2l.com/brightspace/kb/articles/1100-using-postman-with-the-brightspace-api

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