saprouter service not starting Error5:Access denied

Hi

Hi i have created service using below command

c:\>sc.exe create SAPRouter binPath= "C:\usr\sap\saprouter\saprouter.exe service -r -W 60000 -R C:\usr\sap\saprouter\saprouttab -K p:CN=SAProuterCA, OU=SAProuter, O=SAP, C=DE" start= auto obj= "NTAUTHORITY\LocalService"

service is created when i try to start getting "Access Denied" error.