A table of contents is automatically included in the Suitability Report and Review Report 2.0 Report Types. It can also be added to report types that don't have it as standard.

If you make any changes to your report in Report Editor, it is very likely that you will need to update the table of contents to reflect any changes to the page numbering.

This is easy. In Report Editor, right-click your mouse anywhere in the table of contents to generate the context menu, like this:

Click Update field and the table of contents will be re-generated according to the new structure of the report.a new dialog box will open like this.

Click here for more information on updating a table of contents in Word.