Hai,
Note that When specifying maps in QuickBooks you will regularly see FullName written after such fields as CustomerJobFullName ,ItemRefFullName, AccountFullName, AccountRefFullName, ClassFullName..etc. In order to match QuickBooks list items such as Customers, Accounts, and Classes with your import data you should provide the Full Name as it appears in QuickBooks as this is the only unique way of identifying the correct list record. So in your import data you need to specify the FullName otherwise the item will not be correctly matched in QuickBooks.