---
title: "SIS Release 4.2"
slug: "sis-release-42"
updated: 2026-10-27T23:12:24Z
published: 2026-10-27T23:12:24Z
canonical: "ims-handbook.cenosco.com/sis-release-42"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://ims-handbook.cenosco.com/llms.txt
> Use this file to discover all available pages before exploring further.

# SIS Release 4.2

May 2025

Release 4.2

Note: These Release Notes only cover specific SIS enhancements. All other enhancements, not related to specific disciplines, are described in the [IMS Platform (General)](/docs/ims-platform-general-release-42) Release Notes.

---

## Enhanced SIF Analysis Roll Back

The SIF Analysis Roll Back is now blocked on certain conditions.

![](https://cdn.document360.io/e492a0e0-a4ba-4aca-8fc6-76b95f91fdf3/Images/Documentation/image-HD18OTR6.png?sv=2026-02-06&spr=https&st=2026-10-28T15%3A58%3A18Z&se=2026-10-28T16%3A58%3A18Z&sr=c&sp=r&sig=SpNL2j3sZQo7QHCnZJFxEPhOV1Rdi4uaKW0fQ%2FnR4VM%3D)

> [!NOTE]
> User Instructions
> 
> To learn more about the Roll Back blockers see [Approving the SIF Design](/docs/approving-the-sif-design#roll-back-blockers).