I am getting the following error when running the data migration tool on a existing Magento data base. I have configured the tool to exclude the custom tables. What could I be missing?

I get the following error

[Migration\Exception]   Integrity Check failed

Even though all integrity check done 100%

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  • I also encountered the same error.
    – Jeffery
    Dec 7, 2015 at 3:06

2 Answers 2


That is strange. Integrity check should show the tables or fields that are missing. You can write try-catch with trace message in \Migration\Mode\Data::runIntegrity to get more information.


Or use

-vvv switch to give you more information

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