Changing an Action
If you want to change a recurring action, the changes will only affect recurrences of the action in the future.
If you want to change an action, it must be in the state Planned.

If an action has already been executed, you can only display it. For more information, see Displaying Scheduled Actions.
...
1. To change an action, call the DBA Cockpit and choose Jobs ® DBA Planning Calendar in the navigation frame of the DBA Cockpit.
2. Position the cursor on a calendar cell and choose Edit.
A dialog box with the action parameters and recurrence pattern appears.
3. Apply your changes and submit them by choosing either Change Current Occurrence or Change All Occurrences. For more information, see Scheduling an Action.