SQL Server Error Msg 666 – The maximum system-generated unique value for a duplicate group was exceeded for index with partition ID %I64d. Dropping and re-creating the index may resolve this; otherwise, use another clustering key.

In this blog post, let’s learn about the error message “666 – The maximum system-generated unique value for a duplicate group was exceeded for index with partition ID %I64d. Dropping and re-creating the index may resolve this; otherwise, use another clustering key.” in Microsoft SQL Server, the reason why it appears and the solution to fix it.

SQL Server Error Message

666 – The maximum system-generated unique value for a duplicate group was exceeded for index with partition ID %I64d. Dropping and re-creating the index may resolve this; otherwise, use another clustering key.

Reason for the Error

To be update soon…

Solution

To be update soon…