I have an external system sending a POST request to a 1.0 RESTlet. The RESTlet processes the data and then calls a 1.0 scheduled script via nlapiScheduleScript(). The business requirements are to send the return statement back to the external system from the RESTlet before it executes the call the scheduled script. Or, right when the scheduled script is invoked, to return a success message to the RESTlet. The goal is to have a fast return back to the external system without waiting for the scheduled script to complete, without preventing the scheduled script execution from being invoked and completed. I know there is some async technologies in 2.0 but I i'm unsure what the best approach is in 1.0