In some scenarios, it is necessary to provide one or more filters when setting up the first call to the Navigation module. For example, if your main-navigation category names are not taken from FactFinder, clicking on the a category must send the corresponding Navigation call to FACTFinder.
The values that you need to allocate to the filters depend on whether you use a category path or simple data fields. If you are in doubt, please contact your project advisor or check the filter return schema in the FactFinder instance.