---
title: recordChangeTag
framework: CloudKit JS
role: symbol
role_heading: Instance Property
platforms: [cloudkit js 1.0+]
path: cloudkitjs/cloudkit.record/recordchangetag
---

# recordChangeTag

A string containing the server change token for the record. Use this tag to indicate which version of the record you last fetched. This key is required if you are saving an existing record.

## Declaration

```data
attribute String recordChangeTag;
```