Out of the box artefacts that read this property. Append the path to your instance URL to open the record and see how the value is used.
Script include: EmPopulateImpactedServices
This setting controls whether the job that populates the impacted-services table is allowed to run; setting it to false disables the job, while users and admins otherwise see no direct change described here. If the setting is missing, the code defaults it to true.
/sys_script_include.do?sys_id=71c4aa147f54221097bef39c6d866552
Script include: EmSyncSeveritiesInImpactedServices
The system reads this setting to decide whether the impacted-services synchronization job may run: setting it to false disables the job, while other values allow it to continue. If the setting is unset, it defaults to true, so the job is allowed to run.
/sys_script_include.do?sys_id=ea45124bffba221097beffffffffff2d
Scheduled script: Event Management - Repopulate Impacted Services
The scheduled script reads this property to decide whether to proceed with repopulating impacted services; when its value is exactly “false,” the script aborts, otherwise it continues. If the property is unset, it defaults to “true.”
/sysauto_script.do?sys_id=c8eb2efdcfef3a106232f5451d851c1c