i have booked a Tatkal ticket in Charminar Exp. (12760) from Hyderabad to Chennai, but unfortunately forgot to change the boarding point to Kazipet (which actually i could a ticket itself from Kazipet), but the tatkal ticket is issued and i cannot cancel it. Is there anyway i can change the boarding station to kazipet or i should book a fresh ticket.
PS: It's an E-ticket