https://community.appian.com/discussions/f/user-interface/14411/add-ability-to-specify-columnlayout-in-sidebysideitemCurrently when you list a columnLayout inside a sideBySideItem you get the following error: "Interface Definition: Expression evaluation error at function a!sideBySideLayout [line 172]: A side by side layout has an invalid item. The item at index 7en-USTelligent Community 12