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 the option Uninstall/Change is only available on the base installer (it is not available on patches). When you run Uninstall/Change on the base installer, it will detect the current patch level and modify according to the current level of patch of the platform.
Also note that on Windows 10, the option Modify is grayed out. You need to click Uninstall. This will start setup program. (Double check that you selected full/base installer and not patch)
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.