Configuring SSO to AD

I have installed a second GW Server on Windows 2012R2 with domain and po.
I want now configure sso to ad.

First step in the manual works with gwadminutil adsso -a M:\mypo

But the second step to create a scp was unsuccessful. (gwadminutil -scp -a <path to PO directory>)
gwadminutil does not know -scp parameter

Whats wrong?