Symptoms
People Picker Control not Populating
Diagnoses
The picker control is populated with the AD DisplayName (using transfer value rule) from the SmartObject but the Identifier was not mapped to DisplayName. The picker control Identifier needs to match the populated value in order for the control to display correctly.
Resolution
Changed the picker control Identifier (by navigating to the control Configure Data Source UI) to DisplayName, matching the set or populated value