Even though I've successfully install the ZENWorks 7 license during the MMS
installation procedure, when I do right click on the Site object I get the
message that this is evaluation version of ZENWorks?!

Then it suggests me to install the license but after providing it with the
license code it gets the following message:

Please extend the schema for this tree before trying to license ZENWorks

no matter I've successfully extended the schema before starting to install
the ZENWorks 7 MMS. So, hot to get rid of the "evaluation license message"?