Does it possible to restriction picked date in date field that only years will display. How it to do If that is possible?
Are you referring to Coral Datepicker ? Could not see anything in the documentation.
Documentation | CoralUI
You can overlay "/libs/granite/ui/components/coral/foundation/form/datepicker/render.jsp" and change it as per your business need as this contains the logic for the rendering of datetpicker.
Not possible out the box, Only a few types are available for date picker.