I expect the library to correctly validate the documented scopes. For instance, the scope mail_settings.bcc.read is unknown to the SendGridPermissionsBuilder and thus gets rejected.
We are using version 9.29.3 of the SendGrid NuGet.
System.InvalidOperationException: The provided scope 'mail_settings.spam_check.read' is not valid. See the API permissions docs for a list of valid scopes.
at SendGrid.Permissions.SendGridPermissionsBuilder.Include(String[] scopes)