---
title: ServiceNow Otto for Virtual Agent system properties
description: Use system properties to customize your assistant. Some properties are available on a system properties form, but some lesser-used properties are available only from the System Property \[sys\_properties\] table. Legacy refers to the standard or enhanced chat experience. Premium refers to the premium chat experience.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/australia/conversational-interfaces/now-assist-in-virtual-agent/nava-sys-props.html
release: australia
product: Now Assist in Virtual Agent
classification: now-assist-in-virtual-agent
topic_type: reference
last_updated: "2025-07-31"
reading_time_minutes: 3
breadcrumb: [ServiceNow Otto for Virtual Agent reference, ServiceNow Otto for Virtual Agent, Conversational Interfaces]
---

# ServiceNow Otto for Virtual Agent system properties

Use system properties to customize your assistant. Some properties are available on a system properties form, but some lesser-used properties are available only from the System Property \[sys\_properties\] table. Legacy refers to the standard or enhanced chat experience. Premium refers to the premium chat experience.

<table id="table_ycq_yzy_fgc"><thead><tr><th>

Property

</th><th>

Description

</th><th>

Legacy or premium

</th></tr></thead><tbody><tr><td>

com.glide.cs.doc\_qna.va\_attachment.max\_attachments

</td><td>

Set the maximum number of attachments that can be attached at one time for the assistant. Default value = 3.

</td><td>

Legacy

</td></tr><tr><td>

com.glide.cs.nass.synthesized\_response.disabled\_popover.hide

</td><td>

Hide the popover for inactive catalog items forServiceNow Otto for Virtual Agent and ServiceNow Otto panel's enhanced chat. The default value is `false`.

</td><td>

Legacy

</td></tr><tr><td>

com.glide.interactive\_view.enabled

</td><td>

Open an interactive side panel view next to the chat window. The default value is `true` to activate AI Experience on your instance.

</td><td>

Legacy

</td></tr><tr><td>

sn\_ai\_websearch.perplexity\_model\_name

</td><td>

Specify the Perplexity model to use for web search. The default value is `sonar`.

</td><td>

Legacy

</td></tr><tr><td>

sn\_ais\_assist.kgnlq\_schema\_name

</td><td>

Control the information available to ServiceNow Otto for Virtual Agent through Knowledge Graph. The default value is `sn_kg.now_user_graph_nlq`.

</td><td>

Legacy

</td></tr><tr><td>

sn\_nowassist\_va.display\_default\_catalog\_image

</td><td>

Show or don't show the default cart image if a catalog item doesn't have an image set in its record. **Value** = `true` shows the default cart image. This is the default value. **Value** = `false` removes the default cart image.

**Note:** A catalog item that is associated with an image continues to be displayed irrespective of the system property.

</td><td>

Legacy

</td></tr><tr><td>

sn\_nowassist\_va.enable\_nass\_show\_all\_option

</td><td>

Displays the **Show all options** link in enhanced chat and enhanced chat's full-page experience. The default value is `false`.

</td><td>

Legacy and premium

</td></tr><tr><td>

sn\_nowassist\_va.enable\_suggested\_queries

</td><td>

Enable suggested search queries for enhanced chat to appear in the chat window. Any search query performed in the portal's search bar appears as a part of the greeting topic for subsequent new conversations. The default value is `false`.

</td><td>

Legacy

</td></tr><tr><td>

sn\_nowassist\_va.enhanced\_chat\_pin\_enabled.&lt;portal-url&gt;

</td><td>

Create a system property to enable pinning a chat window on a portal. In the system property, **&lt;portal-url&gt;** is the URL suffix for the portal application. For example, the system property for enabling a chat window in Employee Center would be **sn\_nowassist\_va.enhanced\_chat\_pin\_enabled.esc**. By default, pinning a chat window is enabled for Service Portal. For all other portals, create the system property. For a list of URL suffixes, navigate to **All** &gt; **Service Portal** &gt; **Portals**.

</td><td>

Legacy and premium

</td></tr><tr><td>

sn\_nowassist\_va.max\_suggested\_queries

</td><td>

Determine the maximum number of suggested search queries to display within the greeting topic for enhanced chat window conversations. The default value is `6`.

</td><td>

Legacy

</td></tr><tr><td>

sn\_nowassist\_va.show\_view\_more\_for\_synthesized

</td><td>

Show the **Need more help** button in a standard chat conversation. The **Value** field is empty by default so the button doesn’t appear. To show the **Need more help** button, enter `regular`, `clarification`, or `regular,clarification`.

 -   `regular`: The **Need more help** button appears only for synthesized responses.
-   `clarification`: The **Need more help** button appears only for clarification responses. Clarification responses typically occur when an end user's response is too vague and clarification is needed for a more targeted response.
-   `regular,clarification`: The **Need more help** button appears for both synthesized responses and clarification responses.

</td><td>

Legacy \(standard chat only\)

</td></tr><tr><td>

sn\_nowassist\_va.synth\_response\_revisit\_position

</td><td>

Change the order of the fallback and revisit options in a conversation. In the **Value** field, enter `BEFORE_FALLBACK` or `AFTER_FALLBACK`, and then select **Update**.

</td><td>

Legacy

</td></tr><tr><td>

sn\_nowassist\_va.synthesized\_autostart\_items

</td><td>

When synthesized response only returns a singular action, configure whether to automatically launch the action. By default, only Virtual Agent topics and agents automatically launch. You can configure this for whenever synthesized response returns a single conversational catalog item, a single Virtual Agent topic along with Knowledge Base information appears, a single conversational catalog item along with Knowledge Base information appears, or an agent response with sourced Knowledge Base information appears.

 -   Type: string
-   Default value: topic, agent, agent\_with\_sources
-   Location: System Property \[sys\_properties\] table

</td><td>

Legacy

</td></tr><tr><td>

sn\_nowassist\_va.use\_planner2\_response\_as\_fallback

</td><td>

Set to `false` \(default value\) to use the Virtual Agent fallback message when an answer cannot be found. Set to `true` to use an LLM-generated fallback message that is more specific in response whenever an answer cannot be found.

</td><td>

Legacy

</td></tr><tr><td>

sn\_ais\_assist.enable\_pi\_in\_nba

</td><td>

Enable relevant history-based suggestions.

 `False`: Only LLM-based suggestions appear. This is the default value.

 `True`: History-based suggested actions can appear and occupy multiple suggested action slot options.

</td><td>

Legacy

</td></tr></tbody>
</table>