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SQL Server error code

SQL Server error 2508

SQL Server raises error 2508 at severity 16, which marks a problem with the query or data that you can correct.

The %.*ls count for object "%.*ls", index ID %d, partition ID %I64d, alloc unit ID %I64d (type %.*ls) is incorrect. Run DBCC UPDATEUSAGE.
Msg2508
NameDBCC_OUT_OF_DATE_PAGE_OR_ROW_COUNT
Severity16
Group2000–2999

What it means

In versions of SQL Server before SQL Server 2005, the values for the table and index row counts and page counts can become incorrect. Databases that were created on versions prior to SQL Server 2005 may contain incorrect counts. DBCC CHECKDB has been enhanced to detect these errors and returns this warning message when the error encountered.

Source: Database Engine events and errors