Posh fans are advised they can't pay on the day at Portsmouth.
Peterborough United supporters are advised that there are no tickets available to purchase on the day at Fratton Park on Saturday afternoon.
Portsmouth advised the club that they would not be able to sell on the day. The club have now extended the window for fans to purchase in advance to 4.30pm on Friday afternoon at the Weston Homes Stadium Box Office and online at www.theposhtickets.com.