{"section":"faq","requestedLocale":"en","requestedSlug":"why-doesnt-the-product-field-appear-as-a-filter","locale":"en","slug":"why-doesnt-the-product-field-appear-as-a-filter","path":"docs/en/faq/search/why-doesnt-the-product-field-appear-as-a-filter.md","branch":"main","content":"In a category, you can create a product field (product specification) with two filter options: **Link in Top Menu** and **Link in Side Menu**. Those links become filters in the main or side menu only if the field type is one of the following:\n\n- **Combo**\n- **Radio**\n- **CheckBox**\n\nDo not use text fields as filters. They can contain long values or HTML, which makes browsing harder.\n\nThe filter appears in the menu only when there are active products that use it. The SearchNavigator control checks whether the filter exists on the product. If no product has that attribute, the menu does not show the option.\n\nIf you integrate products from other stores into your catalog, index the product after you add it so the indexer overwrites the seller's specifications.\n\nTo create product fields, see [Adding product specifications or fields](/en/docs/tutorials/adding-specifications-or-product-fields)."}