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In circumstances where perturbation is applied to a table, it may be possible to impute unperturbed values if an unperturbed measure such as mean is available in conjunction with the sum measure.

To prevent this from happening, there is a configuration setting that administrators can modify to remove the sum measure from the table selection tree.

Default Behaviour (Sum Options Available):

SuperWEB2 Modified to Suppress Sum:

To make this change, you need to edit the file <tomcat_home>\webapps\webapi\WEB-INF\web.xml

Make a backup copy of this file before making any changes.

To suppress the ability to add "Sum" to a table:

  1. Open web.xml in a text editor.
  2. Locate the following section:

    <context-param>
    	<description>
    		Whether to suppress Sum summation options from showing in the schema tree
    	</description>
    	<param-name>suppressSum</param-name>
    	<param-value>false</param-value>
    </context-param>
  3. Change the value of <param-value> from false to true.

  4. Save web.xml.
  5. Restart Tomcat.

This setting applies to all datasets available on the SuperSERVER instance. It is not possible to configure the setting on a per-dataset basis.