---
sourceDocument: Australia Build or modify applications
sourceDocumentLink: https://www.servicenow.com/docs/r/application-development

 Release :

    - australia

ft:locale :

    - en-US

ft:publication_title :

    - Australia Build or modify applications

ft:clusterId :

    - cadev

bundleId :

    - cadev

workflow :

    - Development, Data, and Analytics


---

# Reference

# Update sets reference {#ariaid-title1}

* Release version: Australia
* 
* Updated March 12, 2026
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read

Reference topics such as general guidelines and system properties for system update sets.
* **[Default update set](https://www.servicenow.com/docs/m5o7Gf_3aLwSxjL6XxBWmw)**   
  Only one update set can be the default set for any application scope.
* **[Customizations tracked by update sets](https://www.servicenow.com/docs/N9uPaKUZULg_DMdFI6DQqg)**   
  Update sets track customizations to application tables, fields, and records.
* **[General guidelines for planning the update process](https://www.servicenow.com/docs/7PO~kyVsE7jHZQeEITFwjw)**   
  A reference topic that contains general guidelines to create a standard process for moving customizations from instance to instance.
* **[Update sets properties](https://www.servicenow.com/docs/Ng7wlU0VzQdy8mdu6SIRqg)**   
  A reference topic that contains information on the system properties used with update sets.
* **[Important considerations before deleting update sets](https://www.servicenow.com/docs/647XU_3qgrZ9NBE~pMB~XQ)**   
  Revert a customization, back out the update set rather than deleting it.