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Executing Summarization Using Classification 
Procedure
To summarize projects using an existing hierarchy identification, proceed as follows:
Use the Hierarchy overview pushbutton to obtain a list of the hierarchies active in the controlling area.
Choose Extras
If you only want to summarize a subhierarchy, choose the arrow icon. The subhierarchy dialog box appears. The system displays a list, showing all the characteristics for which a summarization is carried out. Enter the characteristic values for which you want a project summarization now.
The system displays a dialog box, where you confirm the project summarization.
Select the Background processing indicator if you want to run the summarization in the background.
The next screen is an overview, showing the hierarchy nodes processed.

It is possible to generate summarization hierarchies with no data. You can then evaluate the hierarchies in, for example, the hierarchy reports. The data is read interactively and assigned to the appropriate view. For performance reasons, we recommend that you use this procedure in very large structures. Use Tools to access the view in the hierarchy reports.
See also:
Alternative Hierarchies in SummarizationResult
After the online summarization, the system displays an overview screen, which shows the hierarchy nodes processed.
You can access the following functions:
The message log lists any errors which occurred and information messages for the summarization.
The table statistics detail how many totals records were written in the summarization.
The following functions are also available:
Use this function to enter names for the different levels in the hierarchy.
Use this function to display the names for the different levels in the hierarchy.
