Installation Process
Windchill REST Services is installed and updated by the PTC Solution Installer (PSI). It is bundled with supported version of Windchill release. It is installed and updated with a full or CPS release of Windchill.
To install Windchill REST Services, you must ensure that it is available in the staging area while installing Windchill.
When you update a Windchill installation with a CPS release, select the Install Critical Patch Set option to install or update Windchill REST Services.