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Assume that you have a Master Data Services database (MDS) in SQL Server 2016 and 2017. When you try to upgrade the MDS database to the latest version, you may notice that the upgrade fails after a few minutes. Additionally, you may receive error messages that resembles the following:

Microsoft.MasterDataServices.Configuration.ConfigurationException: Incorrect syntax near the keyword 'IF'. ---> System.Data.SqlClient.SqlException: Incorrect syntax near the keyword 'IF'.


This issue occurs when you use many-to-many (M2M) derived hierarchies with a long attribute name. Then, the CONTACT function truncates the SQL statement.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


This issue is fixed in the following cumulative updates for SQL Server:

About cumulative updates for SQL Server:

Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:


Learn about the terminology that Microsoft uses to describe software updates.

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