Duplicate Client Script Audit for Table (#2521)

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Author: zakir8992

Server-Side Components/Background Scripts/Duplicate Client Script Audit for Tables/Backgroundscript_clientscript_duplicate_1.png

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+# Duplicate Client Script Audit for Table
+
+Detects duplicate Client Scripts created on a specific table such as Incident, Change Request, or Problem. Helps identify redundant client scripts that share the same configuration.
+
+## Use Case
+
+Every ServiceNow developer Junior or senior has been there, you're building something late at night, testing a client script, and you hit **“Insert and Stay”** instead of **“Update.”**  It looks harmless at first until a few days later, your form starts behaving strangely because multiple client scripts with the same logic are firing at once.
+This script was created for exactly that situation:  
+- It helps you **find and report duplicate client scripts** on any table, so you can clean them up before they cause issues.
+- It scans through active client scripts and highlights cases where multiple scripts:
+  - Have the same **name**, **UI type**, **type**, **order**, and **field** (for *onChange* scripts)
+  - Exist within the same table
+  - Are still **active** in the system
+  - By running this audit, you can quickly detect redundant client scripts that may have been unintentionally cloned
+
+
+### Functionality
+Uses a Background Script to:
+- Query all active client scripts for the selected table
+- Sort them by creation date (oldest to newest)
+- Detect duplicates with identical configurations
+- Display results as:
+  - [ORIGINAL] – first created client script
+  - This script has X duplicates – count of newer scripts with the same trigger setup
+- If no duplicates are found, a message confirms:
+  - No duplicate client scripts found for this table
+
+### Steps to Run
+
+1. Navigate to **System Definition → Scripts - Background**  
+2. Click **New**  
+3. Paste the provided script and modify this line as needed:
+   - var targetTable = 'incident'; // or 'change_request', 'wm_order' etc....
+4. Run Script
+
+---
+
+### Example:1 Run The Bacground Script For Change Request Table
+
+![Duplicate Client Script Audit Output](Backgroundscript_clientscript_duplicate_4.png)
+
+---
+
+### Cross Checking The result from output of Script Run
+
+![Duplicate Client Script Audit Output](Backgroundscript_clientscript_duplicate_1.png)
+
+---
+
+### Example:2 Run The Bacground Script For Incident Table
+
+![Duplicate Client Script Audit Output](Backgroundscript_clientscript_duplicate_3.png)
+
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Server-Side Components/Background Scripts/Duplicate Client Script Audit for Tables/Backgroundscript_clientscript_duplicate_3.png

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+// Target table
+var targetTable = 'change_request'; // < can be incident, change_request , wm_order etc.... > 
+
+// counters
+var seen = {};
+var duplicateCount = 0;
+var totalCount = 0;
+
+// Query ACTIVE Client Scripts sorted by creation date (oldest → newest)
+var gr = new GlideRecord('sys_script_client');
+gr.addQuery('table', targetTable);
+gr.addQuery('active', true);
+gr.orderBy('sys_created_on');
+gr.query();
+
+gs.print('--- Duplicate Client Script Audit for table: ' + targetTable + ' ---');
+gs.print('Sorted by creation date (oldest → newest)');
+gs.print('MODE: Detection only (no updates performed).');
+gs.print('');
+
+// group Client Scripts
+while (gr.next()) {
+    totalCount++;
+
+    // Build unique trigger key
+    var key = gr.name + '_' + gr.ui_type + '_' + gr.type + '_' + gr.order;
+    if (gr.type == 'onChange') key += '_' + gr.field;
+
+    // Build readable script info
+    var info = gr.name +
+           ' | Type: ' + gr.type +
+           (gr.type == 'onChange' ? ' | Field: ' + gr.field : '') +
+           ' | Order: ' + gr.order +
+           ' | Created: ' + gr.sys_created_on.getDisplayValue() +
+           ' | Sys_id: (' + gr.sys_id + ')';
+
+
+    // If first occurrence consider it as key
+    if (!seen[key]) {
+        seen[key] = {
+            original: info,
+            duplicates: []
+        };
+    }
+    // If key already exists put into duplicate
+    else {
+        seen[key].duplicates.push(info);
+        duplicateCount++;
+    }
+}
+
+// grouping the scripts 
+var groupsWithDuplicates = 0;
+for (var key in seen) {
+    var group = seen[key];
+    if (group.duplicates.length > 0) {
+        groupsWithDuplicates++;
+
+        // Original
+        gs.print(group.original);
+
+        // Summary line
+        // gs.print('This ' +  seen.key + 'script has ' + group.duplicates.length + ' duplicate' );
+		var trimmedKey = key.split('_')[0];
+		gs.print('This ' + trimmedKey + ' script has ' + group.duplicates.length + ' duplicate' + (group.duplicates.length > 1 ? 's.' : '.'));
+
+		// Separator
+        gs.print('--------------------------------------');
+    }
+}
+
+// no duplicates found
+if (groupsWithDuplicates === 0) {
+    gs.print('No duplicate client scripts found for this table.');
+}
+
+// ✅ Final summary
+gs.print('\n--------------------------------------');
+gs.print('✅ SUMMARY for table: ' + targetTable);
+gs.print('Total active scripts scanned: ' + totalCount);
+gs.print('Originals with duplicates: ' + groupsWithDuplicates);
+gs.print('Total duplicates detected: ' + duplicateCount);
+gs.print('--------------------------------------');