Upgrade the Data Migration Tool
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.
Prerequisites
Before upgrading the Data Migration Tool, you must:
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Upgrade your Magento software to get the latest version
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Back up the
vendor/magento/data-migration-tooldirectory -
Make sure that the Data Migration Tool version matches the Magento application version
Upgrade your Magento software
If you haven’t already done so, upgrade the Magento software.
Back up the vendor/magento/data-migration-tool directory
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.Make sure versions match
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:
Upgrade the Data Migration Tool
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Log in to your application server as, or switch to, the file system owner.
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Change to the application root directory.
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Enter the following command:
code language-bash composer require magento/data-migration-tool:<version>where
<version>must match the version of the Magento 2 codebase.For example, for version 2.1.2, enter:
code language-bash composer require magento/data-migration-tool:2.1.2 -
Wait while the command completes.