Code list histories
Changes to pick lists, icon lists, or SCC lists are classed as Code List Modified actions in the Actions page.
Details could include:
old and new values
old and new descriptions
old and new parent pick lists, for filtered pick lists
All the changes made in the same session are grouped together by user name, date and time. As there may be several pages of changes, you can print the list or save it as a Microsoft Excel spreadsheet or PDF file. How far back the history goes depends on how frequently your system administrator archives this data.
Note: Changes to code lists are only logged if the database is an SQL Server database and audit history is turned on. To find out whether the database logs audit history, check the Audit History setting in the Database Properties.