Prepaid Airfare - Commitment Control behaviour and Accounting entries

Hi Team,

We are currently facing an issue with Airfare for Travel and Expense. We intend to make payments to Travel Agencies (Suppliers) for the Airfare/Train via AP Voucher. We also have commitment control in place. Now the scenario is below

Traveler raises a TA which includes Airfare - as Prepaid Airfare. On Budget checking the TA, Encumbrance would be created which blocks the budget. Now, the payment to Supplier/Travel Agency is done by AP Voucher where in the Voucher would be budget checked, it would create Expense.

When the Expense Report is created, it will copy the prepaid airfare line from the TA and when budget checked, create Expense and liquidate the Encumbrance. Therefore, for the same Airfare, the Budget would have been expensed twice.