Executing the Actual Interest Calculation 
Procedure
The system may ask you to enter the controlling area for which you want to carry out the interest calculation.
This takes you to the screen Actual Interest Calculation: Project/WBS Element/Network.
In individual processing, you can also activate an Include orders indicator if you want to include assigned networks or orders in your selection.
If you want to define the period for the interest calculation very precisely, choose Extras ® To date and enter the appropriate date.
. Depending on the settings you enter, the system displays a list or asks you to schedule a background processing job.
Result
Whether you execute the interest run in test or live mode, the system outputs a log showing the update and, where appropriate, errors.
See
Update LogIf errors have occurred, the system directs your attention to the error log. You access this by choosing Goto
® Messages.In the initial screen for the interest calculation, you can choose Extras
® Log options which hides error messages of type /. These contain information on the processing for the interest calculation, such as the objects for which no interest profile has been maintained.The accrued costs from the interest calculation are recorded in the balancing object as of the last day in the specified period.
The system generates a source document for each interest posting; you can display the document in the information system.

Depending on the settings entered in Customizing, the balance carried forward is made up of either totals records or line items. The system chooses the line items for the last four periods before the interest run. For periods longer ago than that, the system uses the totals records.
Value dates in the past from periods for which interest has been calculated can only be included on a line-item basis. The interest amounts are recorded in the current period.
If you are calculating interest on the basis of totals records, the value dates in the past only contribute to the balance carryforward.