chart is prepared and you are still wiatlisted, so you are not allowed to board the train with the ticket. If you booked ticket online, dont do anything, your money will be refunded to your account. If you booked ticket by visiting reservation center (prs), you need to go and cancel this ticket. If you booked ticket at reservation counter, and you want to travel, contact the tte at the time of the travel and check with him, if there is any vacant berth, if its there he can allow you to travel.