Assume that you use SQL Server Managed Backup to back up databases to Microsoft Azure in Microsoft SQL Server 2016 or 2017. After you install the Cumulative Update 2 for SQL Server 2016 SP1 to address the issue that's described in KB 4014002, when you execute the Managed Backup function managed_backup.fn_available_backups, you may receive an error message that resembles the following:
Violation of UNIQUE KEY constraint 'ConstraintName'. Cannot insert duplicate key in object 'TableName'. The duplicate key value is (ID, DateTime, first_lsnValue, DB).
The statement has been terminated.
This issue is fixed in the following cumulative updates for SQL Server:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminology that Microsoft uses to describe software updates.