---
sourceDocument: Australia ServiceNow AI Platform Capabilities
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/de-DE/servicenow-platform

 Release :

    - australia

ft:locale :

    - de-DE

ft:publication_title :

    - Australia ServiceNow AI Platform Capabilities

ft:clusterId :

    - platcap

bundleId :

    - platcap

workflow :

    - Platform


---

# Create a CMDB Health staleness rule

# Create a CMDB Health staleness rule {#ariaid-title1}

* Freigeben Version: Australia
* 
* Aktualisiert 12. März 2026
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 Minute Lesedauer

If the staleness metric is in effect, then staleness rules are used to determine the percentage of stale CIs in the CMDB. This sum is then aggregated into the correctness KPI.{#t_CreateCMDBHealthStaleRule__ph_StaleRulesShortDesc1}

## Vorbereitungen

Role required: sn_cmdb_editor and itil have read access, sn_cmdb_admin and itil_admin (on top) have full access

## Warum und wann dieser Vorgang ausgeführt wird

The Discovery setting of certain types of CIs as stale takes precedence over a CMDB
Health staleness rule defined for the CI. For more information about Discovery
marking CIs as stale, see [Discovery for VMware
vCenter](https://www.servicenow.com/docs/access?context=c_DiscoveryForVMwareVCenter&version=australia&pubname=australia-it-operations-management&ft:locale=en-US).

Staleness rules are defined per class. If a rule isn't defined for a class, then the parent's rule is automatically derived by the child class and applies for the child class. If later a
staleness rule is defined at the child class level, it overwrites the staleness rule that was derived from the parent class.{#t_CreateCMDBHealthStaleRule__ph_StaleRulesShortDesc2}

## Prozedur

1. Navigate to AllConfigurationCI Class Manager.
2. Select Hierarchy to show the CI Classes list and then select the class for which to create a staleness rule.
3. In the class navigation bar, expand Health, select Correctness, and then select the Staleness Rule tab.
4. Select a staleness rule to edit or select New, and then fill out the Staleness Rule form.  
   {#t_CreateCMDBHealthStaleRule__table_ncm_kfw_m5__entry__2}

   | Field | Description |
   |-|-|
   | Applies to | The class for which the rule applies. |
   | Effective Duration | The time period that is used for the staleness test. If the CI was not updated (based on Updated sys_updated_on) within the specified time period --- the CI is determined to be stale. If you enter a value with a prefix that is valid and a suffix that is not, such as <kbd class="ph userinput">15 x</kbd> --- the valid portion of the value is used ('15'). If the entire value is invalid --- the value is ignored and the previous valid value is used. |
   [ ]

   {#t_CreateCMDBHealthStaleRule__table_ncm_kfw_m5} {#t_CreateCMDBHealthStaleRule__step_step4CreateHealthStaleRule}
{#t_CreateCMDBHealthStaleRule__step_step4CreateHealthStaleRule}
5. Select Submit or Update to save the rule. {#t_CreateCMDBHealthStaleRule__step_step5CreateHealthStaleRule}
{#t_CreateCMDBHealthStaleRule__step_step5CreateHealthStaleRule}{#t_CreateCMDBHealthStaleRule__steps_f4k_yjw_m5}
**Zugehörige Informationen**   

* [CMDB Health Dashboard for Helsinki \| Overview](https://youtu.be/CvMRT3NExIo)