These three files should be considered temporary. The customers.csv file is either overwritten or appended to, depending on your selection during the load. The error and success files are always overwritten during the next load.
Use the Successfully Loaded link to view the customersuccess.csv file—displayed with Microsoft Excel—that contains all the records successfully added or updated in QAD CSS. You should save this file in an archive directory to maintain an audit trail of the updates.
Use the Failed Records link to view the records that were not loaded (customererror.csv). The last data column indicates the reason for the failure.