This feature is available in Evergreen version 2.5.
Evergreen now supports additional functionality for importing items throughCataloging → MARC Batch Import/Export. When items are imported via aHoldings Import Profile in Cataloging → MARC Batch Import/Export, Evergreen will create an item-level record for each copy. If an item barcode, call number, copy location, or circulation modifier is not set in the embedded holdings, Evergreen will apply a default value based on the configured Library Settings. A default prefix can be applied to the auto-generated call numbers and item barcodes.
The following Library Settings can be configured to apply these default values to imported items:
Author: Angela Kilsdonk, Equinox Software