Symptoms
Consider the following scenario:
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You have a report that contains some column groups in Microsoft SQL Server 2012 Reporting Services (SSRS 2012) or SQL Server 2014 Reporting Services (SSRS 2014).
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You define some expressions that contain a Lookup function for the row header cell property of the column groups.
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You export the report to a PDF format file.
In this scenario, the PDF format report displays incorrect data in the row header cells.
Note This issue occurs in the following situations:-
You use hard page-break renderers, such as TIFF or PDF.
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You use soft page-break renderers, such as Microsoft Excel, Microsoft Word, Web archive (MHTML), or HTML. When there are no detail rows or constant values in detail rows of the column groups, the issue occurs.
Resolution
The issue was first fixed in the following cumulative update of SQL Server.
Cumulative Update 1 for SQL Server 2014 /en-us/help/2931693
Cumulative Update 8 for SQL Server 2012 SP1 /en-us/help/2917531
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:
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.