Click the Administer menu and select Enterprise Data.
In the Enterprise Data pane, expand Global and click Financial Periods.
Select the financial periods you want to delete.
Right-click on the row and choose Delete (Delete).
Click Save.
Tips
You cannot delete a financial period that stores past period actuals for any project. If you attempt to delete multiple financial periods at the same time, none of the financial periods will be deleted if any period stores past period actuals for any project. In this case, to delete a financial period, you must archive and delete the project containing past period actuals, then delete the financial period.
You can delete a financial period that has high-level assignment planning values (as entered on the Plan Resources page of P6) as long as the financial period does not contain past period actuals. When you delete a financial period that has high-level assignment planning values, the values are deleted as well.