Hi @Karthick M
If you are using the Microsoft Graph Explorer api tool, then don't need to put an access token, it will automatically configure the token for you when you log in user, you can find it under the Access token option.
Also, if you want access to be granted globally by an organization administrator, then just click the Consent button, it will redirect you to the login page, then you only need to log in with an administrator account and consent to it.
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