Location-Based Dropdown

AbortDuplicates.js

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+(function executeRule(current, previous /*null when async*/) {
+
+        // Add your code here
+
+        var gr=new GlideRecord('incident');
+        gr.addQuery('caller_id',current.caller_id);
+        gr.addQuery('short_description','CONTAINS','email');
+        gr.query();
+        if(gr.next()){
+                gs.addErrorMessage("You have already created the incident with the similar short description");
+                current.setAbortAction(true);
+        }
+
+})(current, previous);

Client-Side Components/Client Scripts/ChangeLocation/Location.js

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+function onChange(control, oldValue, newValue, isLoading, isTemplate) {
+   if (isLoading || newValue === '') {
+      return;
+   }
+
+   //Type appropriate comment here, and begin script below
+
+   var loc=g_form.getReference('u_location').state;
+  alert(loc);
+   if(loc == 'CA'){
+ alert("state is CA");
+ g_form.addOption('preferred_language','africa','Africa');
+   }else{
+ g_form.removeOption('preferred_language','africa');
+   }
+
+}

Client-Side Components/Client Scripts/ChangeLocation/README.md

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+Script Type
+
+Client Script — onChange
+
+This is an onChange client script in ServiceNow that runs automatically whenever the user changes the value of the Location (u_location) field on a form.
+It uses the reference value of that location to check its state and dynamically updates the Preferred Language (preferred_language) field options in real time — without needing to reload the form.