This document describes how to upgrade your DITA CMS 4.2 deployment to the latest DITA CMS 4.3 build.
It assumes that you are running the latest build of the DITA CMS 4.2 and that you have applied all the 4.2 configuration changes.
If that is not the case, please go to the following URL and apply the configuration changes described in the Updating an Existing DITA CMS v4.2 Deployment (Update Guide):
Upgrading to DITA 1.3
If you want to upgrade to DITA 1.3, please see Upgrading a Deployment to DITA 1.3