Create DuplicateCIDetectorScriptInclude.js

var DuplicateCIDetector = Class.create();
DuplicateCIDetector.prototype = {
    initialize: function() {},

    findDuplicates: function(ciName, serialNumber, assetTag, sysId) {
        var duplicates = [];
        var gr = new GlideRecord('cmdb_ci');
        gr.addQuery('active', true);

        // Basic name match (case-insensitive)
        if (ciName) {
            gr.addQuery('name', 'LIKE', ciName);
        }

        // Optional matching by serial or asset tag
        if (serialNumber) {
            gr.addOrCondition('serial_number', serialNumber);
        }
        if (assetTag) {
            gr.addOrCondition('asset_tag', assetTag);
        }

        if (sysId)
            gr.addQuery('sys_id', '!=', sysId); // ignore current record

        gr.query();
        while (gr.next()) {
            duplicates.push({
                name: gr.getValue('name'),
                serial_number: gr.getValue('serial_number'),
                asset_tag: gr.getValue('asset_tag'),
                sys_id: gr.getUniqueValue()
            });
        }

        return duplicates;
    },

    type: 'DuplicateCIDetector'
};

Author: vijaykumar7177

Server-Side Components/Business Rules/Duplicate CI Detection for ServiceNow/DuplicateCIDetectorScriptInclude.js

@@ -0,0 +1,40 @@
+var DuplicateCIDetector = Class.create();
+DuplicateCIDetector.prototype = {
+    initialize: function() {},
+
+    findDuplicates: function(ciName, serialNumber, assetTag, sysId) {
+        var duplicates = [];
+        var gr = new GlideRecord('cmdb_ci');
+        gr.addQuery('active', true);
+
+        // Basic name match (case-insensitive)
+        if (ciName) {
+            gr.addQuery('name', 'LIKE', ciName);
+        }
+
+        // Optional matching by serial or asset tag
+        if (serialNumber) {
+            gr.addOrCondition('serial_number', serialNumber);
+        }
+        if (assetTag) {
+            gr.addOrCondition('asset_tag', assetTag);
+        }
+
+        if (sysId)
+            gr.addQuery('sys_id', '!=', sysId); // ignore current record
+
+        gr.query();
+        while (gr.next()) {
+            duplicates.push({
+                name: gr.getValue('name'),
+                serial_number: gr.getValue('serial_number'),
+                asset_tag: gr.getValue('asset_tag'),
+                sys_id: gr.getUniqueValue()
+            });
+        }
+
+        return duplicates;
+    },
+
+    type: 'DuplicateCIDetector'
+};