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FIX: "An item with the same key has already been added" error in BizTalk Server 2010 when the BizTalk Settings Dashboard exports settings in a BizTalk Server cluster
Article ID: 2509185 - View products that this article applies to.
Consider the following scenario:
An item with the same key has already been added.
This issue occurs because BizTalk Server tries to export the settings of the BizTalk Server instances that are on inactive nodes.
When this issue occurs, the host name and the server name are handled incorrectly. Therefore, the issue that is mentioned in the "Symptoms" section occurs.
Cumulative update package informationFor more information about how to obtain the cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/2573000/ )Cumulative update package 2 for BizTalk Server 2010
Note After you apply this cumulative update package, BizTalk Server exports the settings from only active nodes in a cluster. Additionally, BizTalk Server uses one host name and one server name to copy settings to nodes when BizTalk Server imports settings..
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about Windows Server Cluster for BizTalk Server, visit the following MSDN website:
General information about Windows Server Cluster for BizTalk ServerFor more information about BizTalk Server hotfixes, click the following article number to view the article in the Microsoft Knowledge Base:
For information about service packs and cumulative update packages for BizTalk Server, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/2003907/ )Information about BizTalk Server hotfixes
(http://support.microsoft.com/kb/2555976/ )Service Pack and Cumulative Update list for BizTalk Server
Article ID: 2509185 - Last Review: August 31, 2011 - Revision: 1.0