When you have been exporting files from Volusion, if Volusion has a lot of data, it will show error 502 Bad Gateway.

You don’t need to select the option Check All on Columns. Could you please check list fields which are used on your migration:
Products
Could you please check list fields: ID, productcode, productname, hideproduct, stockstatus, lastmodified, ischildofproductcode, productnameshort, productweight, recurringprice, productprice, listprice, saleprice, metatag_title, metatag_description, productmanufacturer, photo_subtext, photo_alttext, setupcost, productdescriptionshort, productdescription, productfeatures, metatag_keywords, categoryids, optionids, photourl, photourl_large, donotallowbackorders, customfield1, customfield2, customfield3, customfield4, customfield5, photos_cloned_from


Customers
Please check list fields: customerID, accesskey, firstname, lastname, companyname, billingaddress1, billingaddress2, city, state, postalcode, country, phonenumber, faxnumber, emailaddress, emailsubscriber, lastmodified, customer_notes, createddate

Orders
Please check list fields: orderID, customerid, billingcompanyname, billingfirstname, billinglastname, billingaddress1, billingaddress2, billingcity, billingstate, billingpostalcode, billingcountry, billingphonenumber, billingfaxnumber, shipcompanyname, shipfirstname, shiplastname, shipaddress1, shipaddress2, shipcity, shipstate, shippostalcode, shipcountry, shipphonenumber, shipfaxnumber, shippingmethodid, totalshippingcost, salestaxrate, paymentamount, paymentmethodid, cardholdersname, creditcardexpdate, creditcardauthorizationnumber, creditcardtransactionid, bankname, orderdate, orderstatus, total_payment_received, total_payment_authorized, salestax1, salestax2, salestax3, ordernotes, order_comments, orderdateutc

Orders detail
Please check list fields: orderdetailID, orderid, productcode, productname, quantity, productprice, totalprice, optionids, options, discounttype, discountvalue

In case you have any other questions, please reach out to us via:
- Ticket system (highly recommended)
- Email us at [email protected]