Our Magento1 module has some attributes not used in the Magento2 module anymore. Here is a list of these customer attributes:
last_purchase
last_login
last_transaction_id
total_order_count
total_order_amount
first_purchase
first_transaction_id
You need to exclude these attributes from your data migration.
To configure skipping migration of some attributes, need to configure the file:
path_to_install_m2/vendor/magento/data-migration-tool/etc/commerce-to-commerce/eav-attribute-groups.xml.dist
Add the described attributes to the group ignore list:
<attribute type="customer">last_purchase</attribute> <attribute type="customer">last_login</attribute> <attribute type="customer">last_transaction_id</attribute> <attribute type="customer">total_order_count</attribute> <attribute type="customer">total_order_amount</attribute> <attribute type="customer">first_purchase</attribute> <attribute type="customer">first_transaction_id</attribute>
Here is the result: