This report is not available for pre-purge, pre-conversion, or pre-fiscal-year periods.

This means that the date range you specified for the report falls in a period that was either purged (deleted), before your conversion date, or in a year that has been closed out.

To view the current company information, go to Setup > Company Information. Your conversion month and fiscal year information will be displayed on the lower portion of this window.

To view details of prior periods, you can restore a company file backup from that fiscal period.