---
title: Flows, subflows, and actions release notes
description: The ServiceNow Workflow Studio flows, subflows, and actions application enables process analysts to automate work without having to code and to build multiple-step flows from reusable components. See the following sections for release notes by version.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/release-notes/flow-designer-rn.html
release: brazil
topic_type: topic
last_updated: "2026-09-10"
reading_time_minutes: 1
keywords: [flows, subflows, actions]
breadcrumb: [Workflow Studio release notes, App development and low-code release notes, Features and changes by product, Release notes for upgrading from Australia, Learn about the Brazil release, Brazil release notes]
---

# Flows, subflows, and actions release notes

The ServiceNow® Workflow Studio flows, subflows, and actions application enables process analysts to automate work without having to code and to build multiple-step flows from reusable components. See the following sections for release notes by version.

## About Workflow Studio flows, subflows, and actions

-   Automate a repeatable multiple-step process.
-   Run a sequence of reusable actions and flow logic to complete an automated process.
-   Pass data between the steps of a flow.
-   Pass data between child subflows and their parent calling flows.

See [Workflow Studio flows, subflows, and actions](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/brazil/markdown/build-workflows/workflow-studio-flows-subflows-and-actions-landing.md) for more information.

## Activation and other requirements

-   **Activation information**

    Workflow Studio is a ServiceNow AI Platform feature that is active by default.

    Update Workflow Studio from the ServiceNow Store. Visit the [ServiceNow Store](https://store.servicenow.com/sn_appstore_store.do#!/store/home) to view all the available apps, and for information about submitting requests to the store. For cumulative release notes information for all released apps, see the [ServiceNow Store version history release notes](https://www.servicenow.com/docs/r/store-release-notes/sn-store-release-notes.html).

-   **Upgrade information**

    The Brazil release introduces enhanced protections for read‑only fields across the ServiceNow AI Platform®. These changes include a new “read\_only\_option” field with granular control levels, including “strict\_read\_only” and “client\_script\_modifiable". The changes occur in the back end and maintain backward‑compatible behavior. This update helps strengthen your instance security while preserving the flexibility you need. Refer to [KB2718122](https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB2718122) for additional technical details on how to identify affected fields and adjust their settings. For more information about granular read-only security options, see [Configuring read-only security options](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/brazil/markdown/platform-administration/read-only-option.md).


-   **[Brazil Early Availability](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/brazil/markdown/release-notes/flow-designer-rn-2026-09.md)**  
The Brazil Early Availability release introduces the flow troubleshooting agent, input modification during flow debugging, and an enhanced Workflow Studio flow designer experience.

**Parent Topic:**[Workflow Studio release notes](https://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/brazil/markdown/release-notes/workflow-studio-rn-landing.md)