Synchronization of fields between two tables (#2443)

* Create README.md

* Create script.js

Author: chaitanyalal18

Server-Side Components/Business Rules/Sync Fields for two tables/README.md

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+**Scenario**: Synchronize fields between two different tables.
+
+**Example**: Any changes made to the fields on the New Hire HR Case for a user, where the same field also exists on the HR Profile, will automatically be updated on the HR Profile when the field is modified on the case.
+Fields on the case that are derived from the HR Profile are excluded from this synchronization.
+
+**Script Logic**: An after-update business rule that checks the updated fields in the current table (HR case) exist in the other table (HR Profile) and updates them accordingly.

Server-Side Components/Business Rules/Sync Fields for two tables/script.js

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+(function executeRule(current, previous /*null when async*/ ) {
+    // Check if the Subject Person of case is empty
+    if (gs.nil(current.subject_person))
+        return;
+    // Subject person field reference to User Table. Check if the HR profile is present for the user.
+    var profileGR = new GlideRecord('sn_hr_core_profile');
+    if (!profileGR.get(current.subject_person))
+        return;
+
+    // Get all fields from the current record (case)
+    var elements = current.getElements();
+
+    // Loop through each field on the case and get the name
+    for (var i = 0; i < elements.size(); i++) {
+        var field = elements.get(i);
+        var fieldName = field.getName();
+
+        // Skip system fields and derived fields of hr profile (If any)
+        if (fieldName.startsWith('sys_') || fieldName === 'hr_profile')
+            continue;
+
+        var newValue = current.getValue(fieldName);
+        var oldValue = previous.getValue(fieldName);
+
+        // Only act if value changed
+        if (newValue != oldValue) {
+            // Check if the same field exists in HR profile and is accessible
+            if (profileGR.isValidField(fieldName)) {
+                profileGR.setValue(fieldName, newValue);
+            }
+        }
+    }
+	profileGR.update();
+
+})(current, previous);