Symptoms
When you change a parameter in a Microsoft SQL Server 2012, 2014 or 2016 Reporting Services (SSRS) report in Report Builder or the SQL Server Data Tool, you cannot save the report. Additionally, you receive the following error message:
System.Web.Services.Protocols.SoapException: The input XML does not conform to the schema. XML grammar is described in the API documentation. For XML in reports, refer to Report Definition Language syntax. ---> Microsoft.ReportingServices.Diagnostics.Utilities.InvalidXmlException: The input XML does not conform to the schema. XML grammar is described in the API documentation. For XML in reports, refer to Report Definition Language syntax.
at Microsoft.ReportingServices.Library.ReportingService2010Impl.CreateReport(String Report, String Parent, Boolean Overwrite, Byte[] Definition, Property[] Properties, ItemType ItemType, CatalogItem& ItemInfo, Warning[]& Warnings) at Microsoft.ReportingServices.Library.ReportingService2010Impl.CreateCatalogItem(String ItemType, String Name, String Parent, Boolean Overwrite, Byte[] Definition, Property[] Properties, CatalogItem& ItemInfo, Warning[]& Warnings) at Microsoft.ReportingServices.WebServer.ReportingService2010.CreateCatalogItem(String ItemType, String Name, String Parent, Boolean Overwrite, Byte[] Definition, Property[] Properties, CatalogItem& ItemInfo, Warning[]& Warnings)Resolution
This issue is fixed in the following cumulative updates for SQL Server:
Cumulative Update 5 for SQL Server 2016 RTM
Cumulative Update 2 for SQL Server 2016 SP1
Cumulative Update 4 for SQL Server 2014 SP2
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:
Latest cumulative update for SQL Server 2016 Latest cumulative update for SQL Server 2014
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.