Try each of the following until the issue is resolved:
  1. In Advance Sales, on the Create order tab, ensure the correct date is selected, the Show past events checkbox is marked, and click Apply.
  2. In Tickets, Program Search, open the program. 
  3. On the Events tab, open the scheduled program event. 
  4. Ensure that the on-sale information includes the Advance Sales method as well as the time range specified to sell tickets to the event. 
  5. If the event is already past, ensure that the On-sale times allow the amount of time past the event that you are trying to sell the ticket. 
    1. Even if the on-sale time includes the time after the event, on the Create order tab in Advance Sales, ensure the checkbox is marked to Include past events.
  6. Ensure that the Price types that are listed on the Program event are configured to be allowed in Advanced Sales
    1. Go into the Tickets section, Sales Methods, Advanced Sales, Price types tab, and ensure the Price types from the Program event are configured to be allowed
  7. Ensure the event has availability.
    1. In Tickets, Program Search, open the program.  Go to the Event List tab.
    2. Look at this particular event's availability.  If the availability is 0, this means that all the tickets have been sold OR you refunded some tickets but did not add them back to the capacity. 
    3. Click on the event.
    4. Click Edit.
    5. Increase the capacity to be able to sell more tickets.
  8. Ensure that the event is not listed as members-only
    1. In Tickets, Program Search, open the program.  Go to the Event List tab.
    2. Select the event you want to sell tickets to and click Edit Event on the left under Tasks
    3. Under Restrict ticket sales to these memberships: make sure there are no programs listed.
      • If there is a membership program listed and there should not be, highlight the line for the membership program and hit Delete on your keyboard
      • If the membership restriction is supposed to be there, ensure you have an active member selected as the patron before attempting to add tickets to the cart.