File created by QuickBooks Point of Sale (POS), a business sales tracking application; may be the primary data file or a backup file automatically created by the software; enables the business data to be saved (and restored in the case of a backup). Backup QPB files use the following file naming convention: YYYYMMDD####.qpb where YYYY is the year, MM is the month, DD is the day, and #### is the sequence number for the backup (e.g., 0001, 0002, etc.). NOTE: To restore a QPB file from backup, select File ? Restore in QuickBooks POS. From the dialog, you can choose the "Default Location" or a custom location.