Error: 'Last Period Processed Date appears as 30/12/1899'

If you run the Leave Summary and Liability Report or the Long Service Provision Report after you have changed tax year but before you process the first Pay in the new financial year, the Last Processed date will show as 30/12/1899.
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The 1899 date represents a ‘null’ date in SQL.
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Once you have processed and completed your first pay period in the new financial year, the Last Processed date will appear as the Period End Date on the Leave Summary and Liability Report and the Long Service Leave Provision report.