Introduction
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The Upgrade Compatibility Tool ALPHA is a command line tool that checks a Magento instance against a specific version by analyzing all the non-Magento modules installed in it.
The Upgrade Compatibility Tool identifies potential problems that must be fixed in your custom code before attempting to upgrade to a newer version of Magento.
The Upgrade Compatibility Tool returns a list of errors and warnings that you must address before upgrading to a new version of Magento.
It is distributed as a Composer package with every release of a Magento version. See Developer topic for more information.
Refer to the Install for first steps with the Upgrade Compatibility Tool.