You can read C:\AVEVA\Plant\PDMS12.0.SP6\Manuals\Docs\PDMS User Bulletin12.0.pdf Chapter 1.3 Software distribution & installation *12.0.SP6*:
Please note that the installation process has been changed for PDMS 12.0.SP4 onwards. The installers
now use standard Microsoft Installer (MSI) technology, which facilitates silent installations through
standard MSI means. They are usually triggered by use of a setup.exe file.
