Hi! Now I am using SelectItem for displaying items in drop-down list.
But in the back-end session bean, sometimes I have an warning, so it doesn't work properly.
WARNING: FacesMessage(s) have been enqueued, but may not have been displayed. sourceId=form:j_id131[severity=(ERROR 2), summary=(form:j_id131: Validation Error: Value is not valid), detail=(form:j_id131: Validation Error: Value is not valid)]