Event ID 5720 is logged in the Application log after you remove an assembly in BizTalk Server 2004

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SYMPTOMS

After you remove an assembly from your Microsoft BizTalk Server Management database in Microsoft BizTalk Server 2004, the following event is logged in the Application log:

Event Type: Error
Event Source: BizTalk Server 2004
Event Category: BizTalk Server 2004 
Event ID: 5720
Description:
There was a failure executing the send pipeline: "Microsoft.BizTalk.DefaultPipelines.XMLTransmit" Source: "XML assembler" Send Port: "path\BizTalk Server Project\BizTalk Server Project\out\%MessageID%.xml" Reason: This Assembler cannot retrieve document specification by using this type: "string".

Note In BizTalk Server 2004, removing an assembly is also known as undeploying an assembly.

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CAUSE

This problem occurs when you remove an assembly. BizTalk Server 2004 incorrectly removes .NET-type message parts for other unrelated assemblies.

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A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support (http://support.microsoft.com/contactus/?ws=support)

Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Warning You cannot roll back this hotfix from the BizTalk Server environment. Therefore, make sure that you fully test this hotfix in a test environment before you apply this hotfix to a production environment. Do not try to use Add or Remove Programs to remove this hotfix because this does not roll back the database changes, and leaves the BizTalk Server environment in an inconsistent state.

Prerequisites

You must have BizTalk Server 2004 Service Pack 1 (SP1) installed before you install this hotfix.

Restart requirement

You do not have to restart your computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

   Date         Time   Size    File name
   ----------------------------------------------------   
   03-Feb-2005  18:43  94,764  Bts_deployment_logic.sql

Note Because of file dependencies, the most recent hotfix that contains these files may also contain additional files.