If you get the Exception

...
    javax.faces.el.PropertyNotFoundException
...

the specified property cannot be found in the bean.

First thing is to check the accessors and their accessibility. In my case I had all needed accessors and their accessibility, but they were specified in an Inner Class within the bean, and that accessibility was not properly set - to be precise I did not implement it at all. So, just remember to check the accessibility of the classes, too.