Property is not defined.

Hi there,

Property “Mage2SalesOrderItem.weee_tax_applied_amount” is not defined.

That is strange. The ‘weee_tax_applied_amount’ is a default field in the table ‘sales_order_item’ in Magento 2, however it was missing in your database. You can see this: http://prntscr.com/odo9t5
It seems the core module named ‘Magento_Weee’ hasn’t not been installed in your M2 site yet?
You could see this: http://prntscr.com/odocs7

Regards,
Mall.

Hi there,

you’re right magento_weee was not installed

Yes, lets enable that module. And then, you could continue data migration in step #7.
Regards,
Mall.