KSC Open API  13.1
Kaspersky Security Center API description
HostGroup::ZeroVirusCountForHosts ( array  pHostNames,
[out] wstring  strActionGuid 
)

Resets counters of viruses found on the specified hosts.

Parameters:
pHostNames(array) array of the host names.
[out]strActionGuid(wstring) ID of an asynchronous operation. To get a status, use AsyncActionStateChecker.CheckActionState. lStateCode "1" means OK and "0" means failure.

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)
            # fill array with host names
            oHosts2ZeroVirusCount = [...]
            # perform asynchronous action
            strActionGuid = oHostGroup.ZeroVirusCountForHosts(oHosts2ZeroVirusCount).OutPar('strActionGuid')
            # check for result of asynchronous action
            asyncActionStateChecker = KlAkOAPI.AsyncActionStateChecker.KlAkAsyncActionStateChecker(server)
            while True:
                res = asyncActionStateChecker.CheckActionState(strActionGuid)
                if res.OutPar('bFinalized'):
                    if res.OutPar('bSuccededFinalized'):
                        # got asynchronous result: success 
                        break
                    else:
                        # got asynchronous result: some error occurred
                        err_description = KlAkOAPI.Params.KlAkParams(res.OutPar('pStateData'))
                        print('Error occurred:', err_description['GNRL_EA_DESCRIPTION'], '(error code ' + str(err_description['KLBLAG_ERROR_INFO']['KLBLAG_ERROR_CODE']) + ')')
                    return
                else:
                    # asynchronous result is not ready yet - need to wait for lNextCheckDelay milliseconds
                    time.sleep(MillisecondsToSeconds(res.OutPar('lNextCheckDelay')))