Can a ticket be booked after charting?
Yes, where vacant accommodation is offered through current booking within the railway booking window. IRCTC describes this as confirmed e-ticket booking after charting. It is an opportunity to check, not a promise that your train, class or station pair will have seats.
Search the journey you can actually make
Use the exact origin, destination and boarding date. Inspect the booking channel’s current availability, select the offered class and read the complete journey before payment. Budget enough time to reach the station, enter and locate the coach. A ticket available to buy is not useful if you cannot safely reach its boarding point.
Current booking is not a waiting-list upgrade
Treat a new purchase as a separate booking unless your official service explicitly says otherwise. If you already hold a ticket, establish its status and any cancellation responsibility before buying another. Compare passenger names carefully and retain the two transaction references separately. Otherwise you may accidentally create two valid bookings for the same trip.
Details that cannot be left for later
IRCTC’s current-booking guidance does not permit boarding-point or name/age/gender changes on the current-booking PNR. Check those fields before payment. Do not buy for a station you cannot reach on the assumption that you will change it afterward. Read the cancellation conditions shown for the ticket rather than applying a generic last-minute refund estimate.
If no current seats appear
Check another workable departure or class, not just repeated refreshes of one result. A missing offer does not prove the website is broken. Do not use a third-party seat display as authority to board: finish booking through an authorised service and verify the issued ticket. For a failed payment, investigate the transaction before immediately paying again.