Merge duplicate user records automatically

Server-Side Components/Background Scripts/Merge Duplicate User Records Automatically/Readme.md

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+Merge Duplicate User Records Automatically
+
+
+Automatically detects and merges duplicate User records in ServiceNow based on the email address.
+
+Ensures data integrity and prevents duplicate entries.
+
+Reassigns related records (e.g., incidents) to a master record.
+
+Deactivates duplicate users.
+
+In this UseCase
+Multiple users exist with the same email address.
+
+The first record found is treated as the master user.
+
+All duplicates are: Reassigned in related records (e.g., tasks, incidents).
+
+Marked inactive.

Server-Side Components/Background Scripts/Merge Duplicate User Records Automatically/script.js

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+(function() {
+    var userEmailMap = {};
+    var userGR = new GlideRecord('sys_user');
+    userGR.addNotNullQuery('email');
+    userGR.addQuery('active', true);
+    userGR.query();
+
+    var duplicatesFound = 0;
+
+    while (userGR.next()) {
+        var email = userGR.email.toLowerCase();
+
+        if (!userEmailMap[email]) {
+            // First user with this email
+            userEmailMap[email] = userGR.sys_id.toString();
+        } else {
+            // Duplicate found then  merge with master
+            duplicatesFound++;
+            var masterSysId = userEmailMap[email];
+
+            // Reassign related incidents
+            var incGR = new GlideRecord('incident');
+            incGR.addQuery('caller_id', userGR.sys_id);
+            incGR.query();
+            var incidentsReassigned = 0;
+            while (incGR.next()) {
+                incGR.caller_id = masterSysId;
+                incGR.update();
+                incidentsReassigned++;
+            }
+
+            // Deactivate duplicate
+            userGR.active = false;
+            userGR.u_merged_to = masterSysId; // optional custom field
+            userGR.update();
+
+            gs.info("Merged duplicate user '" + userGR.name + "' into master. Reassigned " + incidentsReassigned + " incidents.");
+        }
+    }
+
+    gs.info("Total duplicates merged: " + duplicatesFound);
+
+})();