Hi Prabhat,
as deepak.ingale has already suggested with after business rule that will work perfectly.
i am just adding few points here.
if you will create problem from incident then in problem form there is a related list "Incident" when ever some Problem get created from that incident will attached there.
so here you go try with script below. i tested and it's working perfectly.
(function executeRule(current, previous /*null when async*/) {
// Add your code here
var CreateProb = new GlideRecord('problem');
CreateProb.short_description = current.short_description;
CreateProb.cmdb_ci = current.cmdb_ci;
CreateProb.impact = current.impact;
CreateProb.urgency = current.urgency;
CreateProb.priority = current.priority;
CreateProb.company = current.company;
var sysID = CreateProb.insert();
current.problem_id = sysID;
current.setWorkflow(false);
var mySysID = current.update();
gs.addInfoMessage("Problem " + CreateProb.number + " created");
})(current, previous);
I used condition in business rule "When to run" tab.
To show the message either you use "Action" tab or gs.addInformMessage() function in script. so i used both of them.
Final Result
Hope it will help you.
As a data policy on the incident table with these criteria...
When state is one of Resolved or Closed
AND priority is one of 1 - Critical or 2 - High
AND parent incident is empty
And an associated data rule to specify that when those criteria are met problem_id becomes mandatory.
