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Yes. A CVV Response Code column will appear in the Orders data file orders.csv. If you export orders using the orders.csv data file which is then processed using scripts, you will need to edit your scripts accordingly or you may encounter problems. The new CVV Response Code field will be appended as a new column at the end of the orders.csv file. View an example orders.csv file.
Likewise, a CVV Response Code (cvv-response) will be added to the Orders.xml (Orderlist.dtd). If you export orders using Orders.xml and Orderlist.dtd, you will need to make changes to allow for this new tag. View and example orders.xml file.