---
title: "Version information 1.21"
slug: "version-information-1-21"
updated: 2026-08-10T10:52:12Z
published: 2026-08-10T10:52:12Z
canonical: "docs.grassfish.com/version-information-1-21"
---

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

# Version information 1.21

**API version 1.21 was introduced with IXM One 12.2.**

IXM One 12.2 remains backward compatible with previous API versions. However, API version 1.21 requires IXM One 12.2 or later and is not compatible with earlier IXM One versions.