---
title: "Platform Release 321  - May 2025"
slug: "platform-release-321-may-2025"
updated: 2025-05-30T12:33:40Z
published: 2025-05-30T12:33:40Z
canonical: "support.tulip.co/platform-release-321-may-2025"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://support.tulip.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Platform Release 321  - May 2025

Release 321 brings updates to several features and bug fixes throughout the platform. 

Let us know your thoughts and questions in the [Tulip Community](http://community.tulip.co/t/14859).

## Features and Improvements

### General Improvements
- Machines API's machine attribute write endpoint responds now with an HTTP 424 Failed Dependency in case of the attribute could not be written.<br><br> 



## Bug Fixes
Release 321 contains multiple bug fixes:

| Referenced Ticket | Description |
|---|---|
| PLAT-44666 | Fixed an issue where the MQTT broker would refuse a subscription, causing OPCH to retry a limited number of times and eventually trigger repetitive restarts. The system now handles subscription failures more gracefully to avoid unnecessary restarts. |
| PLAT-44858 | Fixed an issue in how Connector Function outputs are handled for an optional list of empty child elements which was sometimes sent in a way that could cause issues. |
| PLAT-44745 | Fixed an issue where the On-prem Connector Host used too much memory while being disconnected from the Tulip cloud. |
| PLAT-43477 | Fixes a rare issue where apps where assigned to stations without an app id. This can cause apps to show up in the app dropdown without a name, which can cause confusion or inability to go to that app. |


## Full List of Ticket IDs included in Release 321


PLAT-44858
PLAT-44745
PLAT-44666
PLAT-43845
PLAT-43477