SiteMinder administrators don't always have direct access to the host systems and may only have immediate access to logs.
In this use case, the administrator did not have access to the IIS servers to determine the application pool mode.
OS Version :Microsoft Windows Server 2012 R2 Standard
SSO Version :12.52.110.2813
IIS Version :IIS 8
Depending on the Application settings, a different SiteMinder module will be loaded.
Integrated mode - IIS7.0 native module iis7webagent.dll will be loaded
Classic mode - ISAPI6webagent.dll will be loaded
In the Web Agent log, when the Agent is shutting down you can see which module is being shutdown and use that to determine the Application Pool mode.
Classic->
[SmIIS60Filter.cpp:536][CSmIIS60Filter::Shutdown][][][][][][][IIS 6.0 Filter shutting down.]
Integrated->
[CSmIIS70Module::Shutdown][][][][][][][IIS 7.0 Native Module shutting down.]