KSC Open API
Kaspersky Security Center API description
HostGroup::DeleteIncident ( int  nId)

Deletes an incident.

Parameters:
nIdincident ID.

See also how to use the KlAkOAPI Python package:

            server = KlAkOAPI.AdmServer.KlAkAdmServer.Create("https://ksc.example.com:13299", "username", "password", verify = False)
            oHostGroup = KlAkOAPI.HostGroup.KlAkHostGroup(server)
            # ID of the incident to delete
            lId = ...
            # delete the incident
            oHostGroup.DeleteIncident(lId)