Understand Agent Client Collector in the CMDB<!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: #000000; } span { font-size: 12pt; font-family: Lato; color: #000000; } h2 { font-size: 24pt; font-family: Lato; color: black; } h3 { font-size: 18pt; font-family: Lato; color: black; } h4 { font-size: 14pt; font-family: Lato; color: black; } a { font-size: 12pt; font-family: Lato; color: #00718F; } a:hover { font-size: 12pt; color: #024F69; } a:target { font-size: 12pt; color: #032D42; } a:visited { font-size: 12pt; color: #00718f; } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: block; max-width: ; width: auto; height: auto; } } The Agent Client Collector Framework (ACC-F) automatically discovers host information when a newly installed agent starts for the first time. This discovery process creates a computer or server Configuration Item (CI) in the Configuration Management Database (CMDB) and links the CI to the agent. This is done even if Discovery is not installed in the instance because other ACC-F features need CIs to connect events, alerts, and metrics for monitoring or health log analytics. Security Incident Response also requires CIs to link incidents. How ACC-V changes discovery behavior When you install both the Discovery application and the Agent Client Collector for Visibility (ACC-V) application, the initial self-discovery behavior expands. ACC-V records additional information beyond basic discovery, including: Software installationsStorage detailsRunning processes Your instance may show two different Discovery Source values for the computer CIs. AgentClientCollectorThis value appears when the check-discovery-basic check (part of ACC-F) initially discovers the ACC. ACC-Visibility This value appears when: Discovery and ACC-V applications are installedThe Enhanced Discovery Policy periodically runs the Enhanced Discovery checkThe agent falls within that policy's filter Additional discovery sources Other discovery methods may also update the same computer CIs, including: IP-based or horizontal DiscoveryService MappingService Graph ConnectorsData imports and integrations Note: The Discovery Source value typically shows which source most recently updated the CI. CMDB reconciliation The CMDB Identification and Reconciliation Engine (IRE) no longer uses the Discovery Source field at the record level. Instead, IRE uses field-level tracking tables for reconciliation. Subscription and licensing impact ACC-Visibility CIs count toward Discovery or ITOM Visibility subscriptions with lower node count weighting than full Discovery (4:1 ratio as of Q1 2022)AgentClientCollector CI do not count toward these subscription totals.