---
title: Configure full-text search service
slug: cms-11/dev-docs/configuring-optimizely-full-text-search-service
docTags:
createdAt: 2026-07-22T19:45:18.981Z
---
:::hint{type="info"}
**Note**
The Full-text Search Service applies to Optimizely Content Management System (CMS 11) and is not supported on Optimizely Digital Experience Platform (DXP) and other cloud service deployments. It is a legacy feature that will be removed in future versions.
**This section is not supported for ASP.NET Core-based applications.**
:::
The Optimizely Content Management System (CMS) full-text search service (FTS Service) configuration is in the `EPiServer.Search.IndexingService` section of `web.config` and is accessible through properties on `EPiServer.Search.IndexingService.IndexingServiceSettings`. Most of the values have defaults and are not required. The following tables show section and element names and their defaults.
## IndexingServiceSection
| Attribute | Type | Default Value | Comment |
| --------------------------- | ------ | ------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `fipsCompliant` | `bool` | false | Sets to true whether search service must comply with the Federal Information Processing Standards (FIPS). |
| `maxDisplayTextLength` | `int` | 500 | Maximum number of characters allowed in the `DisplayText` field. If `DisplayText` field exceeds this length, search truncates the content and adds the remaining part to the Metadata field. |
| `maxHitsForReferenceSearch` | `int` | 10000 | Maximum number of search results to return internally within the service when you update referenced documents or virtual path nodes. |
| `maxHitsForSearchResults` | `int` | 1000 | Maximum number of search results to return internally within the service when you prepare a search response. |
| Element | Type | Comment |
| -------------- | --------------------- | -------------------------------------------------------------------------------------------------------- |
| `clients` | `ClientCollection` | A collection of **client** elements that define which clients can communicate with the indexing service. |
| `namedIndexes` | `NamedIndexesElement` | Contains the collection of indexes and defines the default index to be used. |
## Client element
Each `client` element contains an IP address or address range from which clients are allowed to connect to the indexing service.
| Name | Type | Default Value | Comment |
| ------------- | -------- | ------------------------------------------------- | ----------------------------------------------------------------------------- |
| `allowLocal` | `bool` | false | Indicates whether the service should accept connection from local interfaces. |
| `description` | `string` | | Description associated with this client. |
| `ipAddress` | `string` | | IPv4 address or range used to authenticate the client. |
| `ip6Address` | `string` | | IPv6 address or range used to authenticate the client. |
| `name` | `string` | Required **key attribute**,
no default value | Name of the configured client that have access to this service. |
| `readonly` | `bool` | Required, no default value | Indicates whether the client can modify the index. |
## NamedIndexes element
The `namedIndexes` element acts as a container for the index collection. This element only has the attribute `defaultIndex`, which should reference one of the indexes in the `indexes` collection. The referenced index is used if no specific index is requested.
| Name | Type | Default Value | Comment |
| -------------- | -------- | -------------------------- | -------------------------------------------------------------------- |
| `defaultIndex` | `string` | Required, no default value | Name of the configured named index that is the default index to use. |
| Element | Type | Comment |
| --------- | ---------------------- | ---------------------------------------------------- |
| `indexes` | `NamedIndexCollection` | Container for a collection of `NamedIndex` elements. |
## NamedIndex element
Each index element defines settings for one index hosted by the indexing service.
| Name | Type | Default Value | Comment |
| --------------------------------- | -------- | ------------------------------------------------- | -------------------------------------------------------------------------------------------- |
| `directoryPath` | `string` | Required **key attribute**,
no default value | Path where the associated Lucene index files are stored. |
| `name` | `string` | Required **key attribute**,
no default value | Name of the index. |
| `pendingDeletesOptimizeThreshold` | `int` | 100 | The number of delete operations that occur before the index is optimized. |
| `readonly` | `bool` | false | Indicates whether the named index can be modified. |
| `aclFieldInResponse` | `bool` | true | Indicates whether the contents of the respective fields are included in the search response. |
| `authorFieldInResponse` | | | |
| `categoriesFieldInResponse` | | | |
| `createdFieldInResponse` | | | |
| `cultureFieldInResponse` | | | |
| `displayTextFieldInResponse` | | | |
| `idFieldInResponse` | | | |
| `itemStatusFieldInResponse` | | | |
| `metadataFieldInResponse` | `false` | | |
| `modifiedFieldInResponse` | `true` | | |
| `publicationEndFieldInResponse` | | | |
| `publicationStartFieldInResponse` | | | |
| `referenceIdFieldInResponse` | | | |
| `titleFieldInResponse` | | | |
| `typeFieldInResponse` | | | |
| `uriFieldInResponse` | | | |
| `virtualPathFieldInResponse` | | | |