The field setting "Include in Search" determines whether the field's values should be considered in content browser simple search operations. If this option is not enabled, the search does not consider the values of the field in search operations. This can be useful, for example, if the field is used for internal discussions or work directives that you don't want to affect the search results. Picturepark checks those settings against the allowed number of Search-indexed fields in your subscription plan. While it may be tempting to include all fields in filters and simple search also boosting them, you may revisit this idea based on your subscription plan limit.