To make sure the versions of your current Magento 2 installation and the Data Migration Tool match exactly, you may need to upgrade the tool.
Before upgrading the Data Migration Tool, you must:
Upgrade your Magento software to get the latest version
Back up the
Make sure that the Data Migration Tool version matches the Magento application version
If you haven’t already done so, upgrade the Magento software.
Before you upgrade the Data Migration Tool, back up at least the
vendor/magento/data-migration-tool directory. During upgrade, it could be deleted and replaced by the updated code.
You can also back up the entire Magento codebase and database using the following command:
php <magento_root>/bin/magento setup:backup --code --db
vendor/magento/data-migration-tool directory contains your custom code. Failure to back it up means you can lose your customizations during upgrade.
The versions of the Data Migration Tool and your Magento software must match exactly. For example, Magento 2.1.2 requires version 2.1.2 of the Data Migration Tool.
See the Install Data Migration Tool topic to know how to:
Check your Magento 2 version
Find released versions of the Data Migration Tool
Check the Data Migration Tool version
Log in to your application server as, or switch to, the file system owner.
Change to the application root directory.
Enter the following command:
composer require magento/data-migration-tool:<version>
<version> must match the version of the Magento 2 codebase.
For example, for version 2.1.2, enter:
composer require magento/data-migration-tool:2.1.2
Wait while the command completes.