Prevent duplicate incidents submission

Server-Side Components/Business Rules/Prevent Duplicate Incident submission/README.md

@@ -0,0 +1,11 @@
+Table: Incident
+When to run : On Before Insert
+
+Use case: 
+
+This Business rule prevents users from creating duplicate incidents. Its checks last 7 days open incident with same caller and short description.
+When a user tries to create an incident with the same short description and caller, the system:
+	Stops the new record from being created.
+  Displays an info message with a clickable link to the existing incident.
+
+This helps reduce incident clutter and ensures users track existing issues instead of repeatedly logging new ones.

Server-Side Components/Business Rules/Prevent Duplicate Incident submission/script.js

@@ -0,0 +1,22 @@
+(function executeRule(current, previous /*null when async*/) {
+  var dup = new GlideRecord('incident');
+    dup.addQuery('caller_id', current.caller_id);
+    dup.addQuery('short_description', current.short_description);
+    dup.addQuery('state', '!=', 6); // Exclude closed
+    var sevenDaysAgo = new GlideDateTime();
+    sevenDaysAgo.addDaysUTC(-7);
+    dup.addQuery('sys_created_on', '>=', sevenDaysAgo);
+    dup.query();
+
+    if (dup.next()) {
+        // Build URL dynamically based on instance name
+        var instanceName = gs.getProperty('instance_name'); 
+        var url = gs.getProperty('glide.servlet.uri') + 'incident.do?sys_id=' + dup.sys_id;
+
+        // Add info message with hyperlink
+        gs.addInfoMessage("A similar incident <a target='_blank' href='" + url + "'>" + dup.number + "</a> already exists (created within the last 7 days).");
+
+        // Stop creation of duplicate
+        current.setAbortAction(true);
+    }
+})(current, previous);