When working with Audit Nodes and Audit Node Groups on the Win32 Audit Policy Manager, on rare occasion, a W615 warning message may appear.
<Please see attached file for image>
This error above generally appears after the Policy Manager was stopped abruptly. For example, ending the policy manager task forcefully through Windows Task Manager may cause a lock on an object.
This document explains how to unlock an object.
The above steps resolve the aforementioned error.