Identification and Reconciliation Rule

Dibya Sarkar009
Tera Contributor

‎01-06-2025 10:43 PM

Hi,

Need understanding on the below questions.
1. How Identification rule works and identifies data ?

2. How duplicates are identified and how de-duplication process works ?

3. Can I automate remediation process ? 

Thanks in advance.

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Gaurav Shirsat
Mega Sage

‎01-06-2025 11:04 PM - edited ‎01-06-2025 11:09 PM

Hello @Dibya Sarkar009 

1) Identification Rule :

Each identification rule is comprised of a set of attributes which are used to search the CMDB for a match. The IRE analyzes the payload received and uses the identification rules, in order of priority, to find a CI in the CMDB. A new CI would be created if no CI is found.

  • The Identification and Reconciliation Engine (IRE) analyzes the payload received 
  • The IRE uses the identification rules in order of priority to find a CI in the CMDB 
  • If a matching CI is found, the system uses the information to update the existing CI.
  • If no matching CI is found, the system creates a new CI 
You can access identification rules in ServiceNow by going to CI class manager and selecting the Identification Rule tab. You can also access them by going to Identification/Reconciliation>CI identifiers from the application navigator.
2)Duplicate Identification :
the Identification and Reconciliation (IRE) module uses identification rules to find CIs in the CMDB hierarchy and determine if a CI should be updated or a duplicate record created
We have CMDB Metric Health Algorithm
 
 
3)Automate Remediate Process:
 
Thanks and Regards
Gaurav Shirsat
 
 

Ashok Sasidhara
Tera Sage
Tera Sage

‎01-13-2025 04:12 AM

I have explained IRE in detail in the following article:

https://servicenowguru.com/cmdb/servicenow-cmdb-identification-and-reconciliation-engine-ire/

 

Duplicates for a CI class are identified based on the identification rule set for that class. It is possible to automate remediation.

You can find some articles related to these topics in the 'ServiceNow support KB articles' section of my following article:

https://www.servicenow.com/community/cmdb-articles/curated-list-of-resources-to-learn-about-cmdb-and...

Also go through any other courses or materials related to CMDB health given in various sections of the article above.