Assume that you use a Multidimensional Expressions (MDX) calculation in Microsoft SQL Server 2012 Analysis Services (SSAS 2012). Some calculation members are defined with non-existent tuples. When you run this MDX calculation, you receive an unexpected exception. Additionally, an access violation occurs.
To work around this issue, add a format string (FORMAT_STRING="").
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Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.