The prerequisite to using Unx Documenter is to have Semantic Layer Java SDK enabled. However it is not enabled during default installation of SAP BusinessObjects client tools. Here is how you can enable it:
Open Program and Features:
Find the client tools and double click on them (or right click and select Uninstall/Change):
Note that in Windows 10, the button Modify is grayed. You need to select Uninstall. It will not uninstall the client tools but start the Client Tools setup where you will be able to select to modify the features:
In the client tools setup, select Modify:
Click Next on language selection. Add Semantic Layer Java SDK and complete installation with Next.
You are ready to go.