You can recalculate payouts for closed periods in two situations: when the member benefits change due to changed requirements, or when the member submits transactions after the payout period is closed, or there is an error in the payout calculation. In both cases, you need to modify the payout records and run the rebate flow again to recalculate the payouts. The first method is to recalculate payouts due to changed benefits, which means that the benefit structure and terms have changed after the payout was calculated for a period. The second method is to recalculate payouts with no charge in benefits, which means that the benefit structure and terms have not changed, but the transactions or the payout calculation have changed. References: Recalculate Payouts for Closed Periods, Rebate Management