When attempting to generate the SmartObject for Lists/Libraries in a particular site, the following error appears:
"SmartObject property K2_Int_SiteTitle is a required property for selected method GenerateArtifactsForSharePointList. Value must be set."
When generating the SmartObject for a list/library in other sites it works as expected.
It was determined that the Site Title was empty via [Site Settings > Look and Feel > Title, description, and Logo].
Populating the Site Title resolves the error and allowed for generation of the SmartObject.