ACC-V Not Updating Existing CI with Discovery Source = ServiceNow

[Aman Trivedi1]

Hi Community,

We are testing ACC-V on an existing Windows Server CI.

Issue

The ACC agent is Up and Host Data Collection shows Collected, but the existing CI was not being updated.

The CI had: Discovery Source = ServiceNow

The agent also had only:

Installed Software

and Enhanced Discovery was not assigned.

Finding

The Enhanced Discovery Policy uses: sn_agent.disco_disable_ci_clobber_of_agentless_disco = true

When enabled, the policy filters for:

• AgentClientCollector
• ACC-Visibility
• ServiceNow DEX
  

Therefore, our CI with Discovery Source = ServiceNow was not getting qualified to trigger the Enhanced Discovery check.

Test

For testing only, I manually changed: ServiceNow → ACC-Visibility and triggered Collect Host Data again.

After this:

• Enhanced Discovery was assigned.
• Windows CI attributes were updated.
• MSFT SQL Instance and SQL Server Analysis Services were discovered.
• Related CMDB relationships were created.

Question

According to the ServiceNow documentation, ACC-V does not perform Discovery when the target already has a CI discovered by Horizontal Discovery with Discovery Source = ServiceNow, unless this behavior is overridden.

Reference: Using Enhanced Discovery and agent-less Discovery together

The documentation also mentions that this setting is ignored if Horizontal Discovery has not run within the configured threshold.

In our case, the last visible Horizontal Discovery update for this CI was more than 14 days before our ACC test, but Enhanced Discovery was still not assigned until we manually changed the Discovery Source to ACC-Visibility.

Existing IRE:

What is the recommended approach here? Should we set this property to false

Thanks!