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CMDB Health not detecting duplicates CI with different Discovery Sources

Uncle B
Tera Contributor

Hi All,

 

I’m seeing an issue with CMDB Health duplicate detection. In my environment, some Computer CIs are created by a third-party integration, and those records do not have corresponding assets. Their discovery source is set to reflect that external system.

Later, when the related asset is created in ServiceNow—using the same serial number—a second CI is created with the discovery source snAssetManagement.

However, when the CMDB Health job runs, it does not generate a duplicate task for these two CIs.
If I clear the discovery source on both records and rerun the health job, a duplicate task is created as expected.

Can someone explain why the discovery source affects duplicate detection, and what logic CMDB Health uses here?

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