---
sourceDocument: Yokohama ServiceNow AI Platform Administration
sourceDocumentLink: https://www.servicenow.com/docs/r/yokohama/platform-administration
Release :
- yokohama
ft:locale :
- en-US
ft:publication_title :
- Yokohama ServiceNow AI Platform Administration
ft:clusterId :
- platadm
bundleId :
- platadm
workflow :
- Platform
---
# Typo handling
# Typo handling {#ariaid-title1}
* Release version: Yokohama
*
* Updated July 16, 2025
*
*  4 minutes to read
Summarize
 Summarized using AI
This content was generated using new OpenAI-powered functionality. Results are provided on an as is basis and are not guaranteed to be accurate or complete.
## Summary of Typo handling
Typo handling in AI Search automatically corrects misspelled search query terms by replacing them with auto-correction terms derived from indexed content.
This feature enhances search accuracy by leveraging a typo handling dictionary linked to a search profile, which continuously updates based on the indexed data from connected search sources.
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## Key Features
* **Typo Handling Dictionary:** Automatically created when search sources are linked to a profile, it gathers valid terms (3 to 255 characters) from indexed content to use for auto-correction. It cannot be deleted, unlinked, or reassigned.
* **Configurable Settings:** You can modify typo handling dictionary settings within the search profile and publish updates to apply changes.
* **Auto-Correction Behavior:** AI Search replaces misspelled terms with the closest dictionary match and displays a notification with an option to retry the original query.
* **Exclusions from Auto-Correction:** Terms with fewer than 3 characters, all uppercase terms (to preserve abbreviations), terms containing numeric digits, and terms excluded explicitly from the dictionary are not auto-corrected.
* **Automatic Refresh:** The typo handling dictionary refreshes its term list every 24 hours by default, with configurable refresh intervals.
* **Language Support:** Supports multiple languages including Arabic, English, French, German, Spanish, and others, but excludes Japanese, Korean, and Chinese variants.
* **Interaction with Other Features:** Auto-corrected terms do not trigger Genius Results with term-based triggers; lemma and Unicode normalization are applied; result improvement rules can be triggered by corrected terms; stop words and synonyms influence auto-correction behavior.
* **Disablement:** Typo handling auto-correction can be disabled at the search application level via configuration settings.
## Practical Application for ServiceNow Customers
ServiceNow customers can enhance search precision by leveraging typo handling to automatically correct user misspellings, improving search result relevance and user experience. Modifying typo handling dictionary settings allows customization of auto-correction behavior for specific search profiles. Excluding certain terms from correction helps maintain control over critical keywords or abbreviations. Understanding interactions with other search features ensures that typo handling integrates smoothly with your configured search enhancements.
To implement or adjust typo handling:
* Modify the typo handling dictionary linked to your search profile.
* Publish the search profile to activate updates.
* Configure the refresh interval to balance update frequency and performance.
* Exclude terms as needed to prevent unwanted corrections.
* Disable typo handling auto-correction if it conflicts with your search application needs.
AI Search replaces misspelled search query terms with auto-correction terms derived from indexed content. Configure typo handling dictionary settings to control derivation of auto-correction terms.
To define auto-correction terms for a search profile, modify settings in the profile's linked typo handling dictionary. The typo handling dictionary derives a list of auto-correction terms from indexed content found in search
sources linked to its search profile. Update the typo handling dictionary to save its settings. Publish the linked search profile to make auto-correction terms available for searches that use the profile.
AI Search automatically creates a typo handling dictionary for a search profile when you link search sources to that profile. You can't delete a typo handling dictionary, unlink it from its search profile, or
link it to any other search profile.
To disable typo handling auto-correction for a search application, deselect the Enable Typo Handling option in the search application configuration. For more details on search application configuration
settings, see [Create a search application configuration for AI Search](https://www.servicenow.com/docs/cUhEr4vhwY5VYZCWMAUUyg "Create a search application configuration to specify AI Search as the search engine for a ServiceNow AI Platform application. Select a search profile for the application to use. Configure the application's settings for refinement and display of search results.").
## Conditions for auto-correction term eligibility {#typo-handling-ais__section_hq3_djt_hnb}
When deriving its list of auto-correction terms, the typo handling dictionary only considers indexed terms that satisfy the following conditions:
* The term includes at least 3 characters and no more than 255 characters.
* The term appears at least once in indexed records from the search profile's linked search sources.
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## Auto-correction of search query terms {#typo-handling-ais__section_rhw_dt2_4nb}
When a search query includes a term not present in the typo handling dictionary, AI Search looks for terms in the dictionary with similar spelling. If it finds a good match, it automatically replaces the original search query term with the dictionary term.
For example, a search for emial, which isn't present on any indexed record, might auto-correct to the similarly spelled term email which exists on multiple indexed records and
thus appears in the typo handling dictionary.
A notification message displays the auto-corrected term. Users can select the link in this message to repeat their search with the original query term.
![Sample auto-correction message showing replacement of search query term emial with email.]()
## Terms excluded from auto-correction {#typo-handling-ais__section_sdn_j4n_mnb}
Auto-correction ignores search query terms that satisfy any of the following conditions:
{#typo-handling-ais__table_hwv_325_vnb__entry__2}
| Condition | Description |
|-|-|
| Search query term includes only 1 or 2 characters | Auto-correction ignores search query terms below 3 characters in length. For example, AI Search doesn't auto-correct the search query term gi. |
| Search query term includes only uppercase letters | To enable search for abbreviations, auto-correction ignores search query terms that contain only uppercase letters. For example, AI Search doesn't auto-correct the search query term PINN, even if it auto-corrects the lowercase form pinn to pin. |
| Search query term includes one or more numeric digits | To enable search for numbers and alphanumeric identifiers, auto-correction ignores search query terms that include numeric digits. For example, AI Search doesn't auto-correct the search query term 402K. |
| Search query term excluded from typo handling dictionary | Auto-correction ignores search query terms excluded from the typo handling dictionary. For instructions on excluding terms from a typo handling dictionary, see [Exclude a term from a typo handling dictionary](https://www.servicenow.com/docs/DVeMlS~OvklotHg2BzXKNw "Prevent AI Search from auto-correcting a term in user search queries by excluding the term from a typo handling dictionary."). |
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## Automatic refresh of auto-correction term lists {#typo-handling-ais__section_p3w_dx2_4nb}
Each typo handling dictionary automatically refreshes its list of auto-correction terms after a set interval. The refresh operation has the same effect as republishing the dictionary's linked search profile.
By default, typo handling dictionaries refresh every 24 hours. If you want the term list refreshed less frequently, you can increase this interval in the dictionary settings.
## Language dependence {#typo-handling-ais__section_dnt_ywq_gnb}
Typo handling is language-dependent. AI Search derives a separate list of auto-correction terms for each supported language found in the search sources' indexed content.
AI Search supports derivation of auto-correction terms for Arabic, Brazilian Portuguese, Czech, Danish, Dutch, English, Finnish, French - Canada, French, German, Hebrew, Hungarian, Italian, Norwegian (Bokmål), Polish, Portuguese, Russian, Spanish, Swedish, and Turkish. Typo handling auto-correction term derivation isn't supported for Japanese, Korean, Simplified Chinese, or Traditional Chinese.
## Interaction with other search features {#typo-handling-ais__section_p3f_wsy_2nb}
The following table describes interactions between typo handling and other search features.
{#typo-handling-ais__table_vdr_yd5_fnb__entry__2}
| Feature | Interaction with typo handling |
|-|-|
| [Genius Results](https://www.servicenow.com/docs/LJCgJ~VTxz7cFZOkbiwePA "Optionally display the best answers for a search query as actionable Genius Result cards included with search results.") | Auto-corrected search query terms can't trigger Genius Result configurations with Term trigger conditions. When computing Q\&A Genius Results for a search query, AI Search corrects terms in the query. |
| [Lemma and Unicode normalization](https://www.servicenow.com/docs/09EeGJnHf2UrIY6uYI6hOQ "AI Search normalizes inflected words and Unicode glyphs during indexing and at search query time. Normalization improves search recall and enables users to find content with variant forms of their search query terms.") | AI Search performs lemma and Unicode normalization on auto-corrected search query terms. |
| [Result improvement rules](https://www.servicenow.com/docs/IDjiQ5RwIAtnreempclVYQ "Define rules with configurable trigger conditions to boost, block, or promote search results for specific searches. You can also boost search results for documents matching elements of the user context, such as a user's country, OS, or device type.") | An auto-corrected search query term can trigger a result improvement rule if it matches the rule's Query trigger. |
| [Stop words](https://www.servicenow.com/docs/R8RRPF4Lqgh2H7QwHu2eJw "Stop words remove search query terms that don't produce meaningful results. Improve search precision and relevancy by configuring stop word dictionaries and defining stop words.") | If a misspelled search query term is defined as a stop word, AI Search auto-corrects that term normally instead of removing it. AI Search ignores terms defined as stop words when determining an auto-correction for a misspelled search query term. For example, if you define email as a stop word, AI Search doesn't offer email as an auto-correction when you search for emial. |
| [Synonyms](https://www.servicenow.com/docs/goi3bc1u6aukr617wTD3cQ "Synonyms expand search queries to include additional terms with equivalent meaning or usage. Improve search recall by configuring synonym dictionaries and defining synonyms.") | If a misspelled search query term is defined as a synonym, AI Search expands that synonym without auto-correcting it. |
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{#typo-handling-ais__table_vdr_yd5_fnb}
* **[Modify settings for a typo handling dictionary](https://www.servicenow.com/docs/t19F3Olt_cr3FbSs8waUCw)**
Modify typo handling dictionary settings for a search profile.
* **[Exclude a term from a typo handling dictionary](https://www.servicenow.com/docs/DVeMlS~OvklotHg2BzXKNw)**
Prevent AI Search from auto-correcting a term in user search queries by excluding the term from a typo handling dictionary.