Hi,
Yes, this can be done. But instead of Using UI Policy or a Client Script as these would now work as you have to check the parent Table and apply the validation on the child Table, I would suggest you to use a Server Side Scripting say a Business Rule, because as per your Requirement you want to check a Validation on the field which is Present on the Requested Item and The Assignee User is working on the child Task form.
For Example, Say I have a field named "Estimated Delivery" on the Requested Item form and when the Assignee tries to Update Catalog Task(In your Scenario it will be Incident Task or any other Child Task you want which has a Relationship between the two Tables) , it will throw an error and Abort the form Submission if the Estimated Delivery field is empty as per the Script below:
Write a Before Insert/Update Business Rule on the Catalog Task Table(Replace with your Required Table) and use the below Script:
Script:
(function executeRule(current, previous /*null when async*/) {
// Add your code here
var item = new GlideRecord('sc_req_item');
item.get(current.request_item);
if(item.estimated_delivery== '')
{
current.setAbortAction(true);
gs.addInfoMessage('Please Select the Estimated Delivery Date before continuing with Catalog Task');
}
})(current, previous);
Result:
Hope this helps.Mark the answer as correct/helpful based on impact.
Regards,
Shloke
