I created a new Expense Item for Air Ticket claim. According to Company Policy, Employee can claim the Air Ticket in advance, so this is an item for Advance Expense. I tick the box 'Advance Expense' while creating this Expense. However, Employee reported that when they try to submit claim for Air Ticket, this option doesn't appear in the Expense Application Form. Why? 

Answer: 

Expense Item for Expense Application and Advance Expense Application is separated. Since this Item was created as an Advance Expense (by ticking the box 'Advance Expense'), it will ONLY show in Advance Expense Application. 

Try apply for Advance Expense Application again and you should see this Item appear in the selection list.