In TKU February 2011 the SI previously using a key_group of install root now uses a key of install root, type and host key. In addition, a check of install_root was added to the trigger rendering a later check to be redundant and duly removed.
In TKU July 2012 'related_sis_search' function from CommonFunctions module was implemented Workbench pattern.
In TKU October 2016 versioning from buildinfo.txt was removed as it leads to creation of the SI even when the product removed.
In TKU April 2019 the following changes were made: