The ft:prettyUrl metadata element is available for unstructured documents.
Defining metadata for an unstructured documents requires a control file.
The following lines show how to define a value for the ft:prettyUrl metadata key in a control file:
<?xml version='1.0' encoding='utf-8'?>
<controlFile>
<resources>
<resource lang="en-US">
<filePath>/Users/johndoe/OLEANDOR/time_machine_assembly.pdf</filePath>
<displayName>OD1000 Time Machine Assembly</displayName>
<description>This document presents the assembly of the OD1000 Time Machine parts.</description>
<metas>
<meta key="ft:prettyUrl">
<value>Product/Oleandor/od1000_Assembly</value>
</meta>
</metas>
</resource>
</resources>
</controlFile>