Khammam Raiway station, in Andhra Pradesh, was unable to generate un-reserved, General Ticket, for a travel up to Malakpet Railway station(situated in Hyderabad city). Clerk concerned says that the system is unable to generate such a ticket. He advices to take the ticket up to Hyderabad, and, and after getting down at Hyderabad, to get out of the station, and purchase a fresh ticket up to Malakpet. Even now also, the same position continues. Standard reply is "ticket up to Malakpet can't be generated from Khammam".
Why is it so?