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: EvtMgmtTagBasedDefinitionToACR
When main-alert group updates are enabled, the system reads this setting to limit how far back it searches for active tag-cluster groups created for the rule. A larger value includes older groups; if unset, it uses 1440 minutes (one day).
/sys_script_include.do?sys_id=21c4a01db76830107c038229ce11a910
Alert Correlation Rule: [Tag Based] Group alerts from the same namespace
When the option to update group records with the main alert is enabled, this setting determines how many minutes back the rule searches for active tag-based alert groups to compare; older groups are excluded. The default is 1440 minutes (one day).
/em_alert_correlation_rule.do?sys_id=e9fa38ac6761c210a26cf94ad8f922c3
Alert Correlation Rule: [Tag Based] Group alerts from the same subnet
When the main-alert update setting is enabled, the rule uses this property to limit its search to active tag-based groups created within the specified number of minutes. This controls how far back admins let the rule look for groups to match; if unset, it defaults to 1440 minutes (one day).
/em_alert_correlation_rule.do?sys_id=ac09fd7867e9c210a26cf94ad8f92244
Alert Correlation Rule: [Tag Based] Group alerts with the same Application
When updating group records with the main alert is enabled, the rule uses this setting to limit its search to active tag-based groups created within the specified number of minutes; older groups are not considered for matching alerts. Admins can change the search window, which defaults to 1440 minutes (one day).
/em_alert_correlation_rule.do?sys_id=c1e73d16074b7510d4728c14dfd3000c
Alert Correlation Rule: [Tag Based] Group alerts with the same Application and Environment
/em_alert_correlation_rule.do?sys_id=0a48fd56074b7510d4728c14dfd30021
Alert Correlation Rule: [Tag Based] Group alerts with the same Assignment group and Class
/em_alert_correlation_rule.do?sys_id=9367e625078f3110d4728c14dfd300b5