The Suburbs and Localities Change Log has been designed to enable the implementation of incremental updates of Suburbs and Localities boundary data at each release period. It is based upon a database management system that records edits, deletions, and insertions of records by reference to the dataset's unique feature identifier, the SL_UFI value. This value is persistent, that is, it remains the same for a record during edits, while new records are assigned new and unique feature identifiers. A change log for Suburbs and Localities Australia data has been maintained internally since February 2010. The first release version of the change log for this product was in February 2011.