Duplicate key was ignored.
This error occurs when you attempt to insert a row that has an index value that violates the uniqueness property (unique with ignore_dup_key) on an existing index.
SQL Server ignores the statement that caused the error and continues processing the transaction.
No action is necessary unless you want to insert that row into the table. If so, you can drop and re-create the index without the unique option, or you can change the data causing the uniqueness violation.
For more information about indexes, see the Microsoft SQL Server Transact-SQL Reference.