Thanks Andre.
here the scenario is whenever SO is modified by any user, it should trigger to SO "created by user id" .
i opened sales order list page and opened alert rule form, there we do not have option to select "created by" field. and how can we set rule like if the SO is modified and alert to created by user id.
Created by user id will not be the same for all the sales orders and each sales order wise created by user id will be different. how the system will trigger alert automatically based on the above condition.
could you please provide update.