For a journey on 28th April 2018 from KSR Bengaluru to Mulki by train No:16513 I wanted to book 3 tickets (all Senior Citizens) in SL and on verifying the quota available for that day under Lower berth (Senior Citizen Quota), I found 5 berth were available under SS quota for that day. I accordingly proceeded to book tickets under SS quota by correctly furnishing the details like age, concession opted etc., I also received an alert saying that you have opted for SS concession and advised me to carry proof of age. Inspite of this, I am surprised that the ticket is booked under General Class and not senior citizen quota when 5 berth were available and I was allotted in General quota under RAC 79, 80, 81 and not confirmed berth under SS quota. Why?