Prevent duplicate update sets (#1383)

* Create preventDuplcateUpdateSets.js

This Business Rule is to prevent duplicate names for update sets

* Create readme.md

Author: bgrk005

Business Rules/Prevent duplicate update sets/preventDuplcateUpdateSets.js

@@ -0,0 +1,14 @@
+(function executeRule(current, previous /*null when async*/) {
+    
+    var updateSetName = current.name.toString().trim();
+    var grUpdateSet = new GlideRecord('sys_update_set');
+    grUpdateSet.addQuery('name', updateSetName);
+    grUpdateSet.addQuery('sys_id', '!=', current.sys_id);
+    grUpdateSet.query();
+    
+    if (grUpdateSet.hasNext()) {
+        gs.addErrorMessage('An update set with this name already exists. Please choose a different name.');
+        current.setAbortAction(true);
+    }
+    
+})(current, previous);

Business Rules/Prevent duplicate update sets/readme.md

@@ -0,0 +1 @@
+This Business Rule will help to prevent duplicate names for update set. And this will display error message when there is duplicate name found for update set name.