The Raw Evidence Type of "OUI" shown in the Device.PNG attachment suggests that this evidence is likely coming from Oracle Universal Installer comps.xml file(s) that are on the file systems of these computers.
The following article provides some more information about these files and how they are used by the FlexNet inventory agent while gather inventory: Information about Oracle Universal Installer (OUI) evidence gathered by the FlexNet inventory agent. In particular, note the following section of this article:
Installation directories that no longer exist
Anecdotally, it is not uncommon to find comps.xml files are not reliably updated by Oracle Universal Installer to indicate Oracle applications are no longer installed when an uninstalled is performed. This can result in FlexNet Manager Suite recognizing installations of Oracle applications based on the evidence, despite other files associated with the installation no longer being on the computer.
The FlexNet inventory agent versions 2021 R1 (17.0) and later contain and improvement that will only return evidence from comps.xml files where the directory specified in the INST_LOC attribute actually exists. Earlier agent versions return all evidence as specified in the comps.xml file, regardless of whether referenced installation directories actually exist.
If you take a look in the inventory agent's tracker.log file from some of these computers you may see details in there indicating specifically where the agent has found comps.xml files on the filesystem, and then you can look in those files for further details.
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