---
sourceDocument: Brazil ServiceNow AI Platform Capabilities
sourceDocumentLink: https://www.servicenow.com/docs/r/servicenow-platform
Release :
- brazil
ft:locale :
- en-US
ft:publication_title :
- Brazil ServiceNow AI Platform Capabilities
ft:clusterId :
- platcap
bundleId :
- platcap
workflow :
- Platform
---
# Validity of a knowledge article
# Validity of a knowledge article {#ariaid-title1}
Release version: Brazil
Updated September 10, 2026
 3 minutes to read
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## Summary of Validity of a knowledge article
Knowledge article validity defines the expiration date of an article, after which it no longer appears in search results.
This expiration is controlled by theValid tofield on the Knowledge form, which authors and editors can set when creating or editing articles.
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## Key Features
* **Default Valid to Date:** Determined by the *Article Validity* setting of the associated knowledge base. If blank, the article defaults to expire on January 1, 2100.
* **Editing Articles:** When article versioning is enabled, updating an article resets the **Valid to** date based on the knowledge base's Article Validity setting. If blank, the previous date is retained.
* **Moving Articles:** Moving an article to a different knowledge base updates the **Valid to** date in the same manner as editing, based on the new knowledge base's Article Validity.
* **Minor Edits:** If the property `glide.knowman.versioning.enableminoredits` is true, minor changes like updating the **Valid to** date can be done without checking out the article.
* **Date Format Considerations:** Using a two-digit year (yy) format may cause issues with the default Valid to date. Adjusting user preferences to a four-digit year (yyyy) format is recommended to avoid problems.
* **Email Notifications:** Monthly reminders are sent to authorized recipients about articles that will expire the following month, enabling proactive validity extension.
## Practical Impact for ServiceNow Customers
By managing the **Valid to** date, customers can ensure knowledge articles remain current and relevant, automatically removing outdated content from search results. The integration with knowledge base settings simplifies administration by standardizing validity periods. Email notifications help maintain knowledge accuracy by prompting timely article reviews and updates.
Understanding these mechanisms allows administrators and knowledge managers to configure expiration policies effectively, maintain content quality, and optimize the user experience within the ServiceNow Knowledge Management application.
Knowledge article validity is the date a knowledge article expires. Articles do not appear in search results after the Valid to date or if the Valid to date is blank.
Decide when to expire a knowledge article by using the Valid to field in
the Knowledge form. The Knowledge form is available when creating or editing a knowledge
article.
When you create or edit a knowledge article, a default value appears in the Valid to field. As an article author or editor, you can select whether to keep or change
the default Valid to date.
Note:
If the system date format or user preferences is set to use yy year format, you might face issues when the Valid to date is set to the default date. Contact your system administrator or modify the user preferences to use a date format with the yyyy year format. For more information, see [Global date and time field
format](https://www.servicenow.com/docs/access?context=r_FormatDateAndTimeFields&version=brazil&pubname=brazil-platform-administration&ft:locale=en-US) and [Personalize the system date
format](https://www.servicenow.com/docs/access?context=t_PersonalizeTheSystemDateFormat&version=brazil&pubname=brazil-platform-administration&ft:locale=en-US) topics.
## Default article validity when creating a knowledge article {#article-validity__section_oqh_p1y_klb}
The default value of the Valid to field is derived from the
Article Validity field configured for the knowledge base (see [Create a knowledge base](https://www.servicenow.com/docs/SQ~3zCiKKCRTpGnkxhaP0A "Create a knowledge base to provide a self-service platform for users to store, share, and manage content. Configure knowledge bases into product or service categories and manage user access based on permissions. Customize workflows for publishing and retiring articles in the knowledge base.")). The
Valid to date starts from the date the article was created until the
number of days specified in the Article Validity field. If the
Article Validity field is blank, the default date in the
Valid to field for the knowledge article is set to January 1, 2100.
## Default article validity when editing a knowledge article {#article-validity__section_f4b_3by_klb}
If the article versioning feature is enabled, the default value of the Valid to date in the updated article version is automatically set as described in the
following table.
{#article-validity__table_h2b_2ms_mlb__entry__3}
| Article Validity value in the associated knowledge base | Valid to default value | Notes |
|-|-|-|
| Blank | Earlier version Valid to date value | If the Article Validity field in the knowledge base associated with the article is blank, the Valid to date value from the earlier version of the article is retained. |
| Is not blank | Article updated date + article validity | If the Article Validity field in the knowledge base associated with the article is not blank, the Valid to date is automatically updated to start from the date the article was updated until the number of days specified in the Article Validity field. |
[Table 1. Valid to date in the updated article version]
{#article-validity__table_h2b_2ms_mlb}
Note:
If the article versioning feature is enabled, you must check out the article to edit the Valid to date. However, if the glide.knowman.versioning.enable_minor_edits property is set to true, some users can make minor edits, such as changing the Valid to date, without checking out the article. For more information, see [Knowledge Management properties](https://www.servicenow.com/docs/aJoqKPn6PWUV9SfhZhUy5A#r_KnowledgeProperties "As an administrator, you can configure the look and functionality of many knowledge base features with Knowledge Management properties.").
If you move a knowledge article to another knowledge base, the default value of the
Valid to date in the updated article is automatically set as described
in the following table.
{#article-validity__table_wsk_kls_mlb__entry__3}
| Article Validity value in the updated knowledge base | Valid to default value | Notes |
|-|-|-|
| Blank | Earlier Valid to date value | If the Article Validity field in the selected knowledge base is blank, the earlier Valid to date value is retained for the knowledge article. |
| Is not blank | Article updated date + article validity | If the Article Validity field in the selected knowledge base isn't blank, the Valid to date is automatically updated to start from the date the article was updated until the number of days specified in the Article Validity field. |
[Table 2. Valid to date when moving a knowledge article to another knowledge base]
{#article-validity__table_wsk_kls_mlb}
Note:
If the dictionary value of the Valid to field is modified, this dictionary value overrides the default value of the Valid to field calculated according to the Article Validity field.
## Email notifications for expiring knowledge articles {#article-validity__section_azl_dls_mlb}
On the first day of each month, the application sends an email notification to a list of
authorized recipients to remind them about articles that are about to expire in the next month.
The recipient can then extend the Valid to date to continue using the
article. For more information, see [Managing email notifications in Knowledge Management](https://www.servicenow.com/docs/MhCUcKjwkYthEMLvHTILuA "Reminders enable relevant users to review knowledge articles and complete tasks associated with them.").