I have registered an application in Azure AD. I am trying to get an access token for Azure SQL Database.

I am sending the request to

Also see aadsts65001 and check if scope parameter added in the request for V2 endpoint.

See if you need to have Directory Readers role to access azure sql database(if not ask the admin to provide the same) or also select Directory.Read.All permissions from API permissions as above. or even we can set from roles and administrator section.