On 28th Jan, I booked a 3rd AC ticket under senior citizen concession for going to Bangalore from Rajahmundry leaving on 9th Feb 2018 through IRCTC. After paying the fare the ticket generated. The berth allotted to me is side upper. Am surprised how a senior person could be allotted Upper berth leaving aside all the guidelines to allot lower berth to senior citizens. The ticket was for one ticket only. Thankful if someone guide how to change from upper to lower berth before the journey date. Thanks.