Received HttpStatusCode:[Conflict] ResponseCode:[SubscribeAgain] while subscribing

[GAvinashKumar]

Receiving HttpStatusCode:[Conflict] ResponseCode:[SubscribeAgain] while subscribing with multiple folderId's for notification. Is this supported or any known issues around it ?

SubscribeToPushNotifications( 
            new[] { new FolderId("AAMkADM4ZWZlaYyFx8TNUDummyidRbLIV8hPB9WkAAM43+iZAAA="), 
                        new FolderId("AQMkAGMxYjUzZDA0LTI5NDItNDDummyIdEAAAIBDAAAAA==") },
            Uri url,
            int frequency,
            string watermark,
            params EventType[] eventTypes);