The charting data for train 12296 shows that 3E seats are available. However, when attempting to book 3E seats on the IRCTC website, it indicates 'NA' every day. How can I book 3E seats ?

The charting data for train 12296 shows that 3E seats are available. However, when attempting to book 3E seats on the IRCTC website, it indicates 'NA' every day. How can I book 3E seats ?

@BWT: Bangarapet Jn   0km/h   24m late@BWT: Bangarapet Jn &0 km/h Xing with #12296: Sanghamitra SF Express and SB 👍👍

22632 Anuvrat Express, 22404 New Delhi Puducherry Express, 12296 Sanghamitra Express overtook 5.5 hours late running 12626 Kerala Express at Kazipet Town station. King of overtakes once upon a time now has become king of reschedules and priority is a matter of history.

22632 Anuvrat Express, 22404 New Delhi Puducherry Express, 12296 Sanghamitra Express overtook 5.5 hours late running 12626 Kerala Express at Kazipet Town station. King of overtakes once upon a time now has become king of reschedules and priority is a matter of history.

22632 Anuvrat Express, 22404 New Delhi Puducherry Express, 12296 Sanghamitra Express overtook 5.5 hours late running 12626 Kerala Express at Kazipet Town station. King of overtakes once upon a time now has become king of reschedules and priority is a matter of history.

22632 Anuvrat Express, 22404 New Delhi Puducherry Express, 12296 Sanghamitra Express overtook 5.5 hours late running 12626 Kerala Express at Kazipet Town station. King of overtakes once upon a time now has become king of reschedules and priority is a matter of history.

@RPR: Raghunathpur   0km/h   3h 53m late@RPR: Raghunathpur &0 km/h #12296: Sanghamitra SF Express