If your job board has categories or custom fields that are being used as job search filters, you should map them to related aggregated job fields in order to deliver a native search experience for your job seekers.
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Unmapped filters don't apply to aggregated job posts, so when a job seeker applies an unmapped filter the search results won't contain any aggregated jobs.

Mapping filters is simple. In the filter mapping interface, each filter is inside a card that contains all options of that filter.

You map each option by clicking the "Map to field" button on the right side of the card and selecting the corresponding field and value from the aggregated job fields popup.
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You may map each option to one or more fields, and you may leave some options or filters completely unmapped. Partially mapped filters are valid and will work as expected.

The data in aggregated job fields is limited by the sources we aggregate from, so not all of your custom filters will have a corresponding field.