Use
Setting an alert to the Complete status removes it from the set of active alerts that are shown in the alert monitor and alert browser. Set alerts to complete as soon as you have resolved the underlying problem or have determined that the alert was transient or can be ignored.
Completing an alert saves it in the R/3 database. The alert is retained there until you remove it by
reorganizing completed alerts.Procedure
See also:
Displaying Completed Alerts Reorganizing Completed Alerts