Revaluation is executed as part of period-end closing. As only the planned price is available when the actual activity quantity is posted, these quantities are first valuated using the planned price. Actual price calculation determines the prices iteratively at the end of the period and, if the relevant settings have been made, the system can calculate the difference between the planned and the actual values through revaluation. For internal orders and other measures, such as projects, the revaluation must be executed in a separate run.