If you try to install Proactive Outreach Manager on an unsupported Voice Portal or Avaya Experience Portal version, the installer displays the following message and quits:
Installed EP version is not supported for installing POM 04.00.02.00.00.220920
Current EP version: 7.1.0.0.1107. Minimum supported EP version is: 8.1.2.0.0844
Prereq check for POM failed!
When the prerequisite check fails, you can see the details in /tmp/InstallSummary.log.