Call or mechanism to renew access token before or after expiry

I’m developing an app where i want to keep user’s session alive to fetch holdings details everyday, for which i want to keep the session alive and keep access token valid.
Please let me know if there’s any refresh mechanism available for the same.

Presently, there is no existing mechanism in place to maintain the token’s validity. Therefore, you must complete the obligatory authentication process steps, which also adhere to regulatory and compliance requirements.

In the event that we implement such a mechanism in the future, rest assured that we will proactively notify you about it.