FIX: BizTalk 2009 Accelerator for HL7 cannot send an HL7 message when you have configured field overrides for the MSH8 or MSH12 field

Consider the following scenario:
  • On a computer that is running Microsoft BizTalk Server 2009, you have installed Microsoft BizTalk 2009 Accelerator for HL7 (BTAHL7).
  • You use a BizTalk orchestration to process an HL7 message, and then send the message to a receiving party.
  • In BTAHL7 Configuration Explorer, you configure MSH field overrides in the MSH8 or MSH12 field for the receiving party.
In this scenario, BizTalk Server cannot send the HL7 message to the receiving party. Additionally, the following error is logged in the Application log:
Event Type: ErrorEvent Source: BizTalk Server 2009Event ID: 5720Description:There was a failure executing the send pipeline: "BTAHL72XPipelines.BTAHL72XSendPipeline, BTAHL72XPipelines, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Source: "BTAHL7 2.X Assembler" Send Port: "SndMsg_FILE" URI: "<URI>" Reason: Value cannot be null.Parameter name: element
Note This issue does not occur in messaging scenarios that do not use BizTalk orchestrations.

Hotfix information

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 the problem described in this article. 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: 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.


You must have BizTalk Accelerator 2009 for HL7 installed to apply this hotfix. To apply this hotfix, follow the instructions that are in the Readme.txt file that is contained in this hotfix package.

Restart requirement

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

Hotfix replacement information

This hotfix does not replace 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 item in Control Panel.
File nameFile versionFile sizeDateTimePlatform,96005-Jan-201009:52x86

Known Issue

If you uninstall this hotfix package, the file that the hotfix updated is not rolled back to the previous version. To roll back this file manually, you can copy the file before you install the hotfix, and use this file to replace the updated file.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about how to configure MSH field overrides, visit the following Microsoft Developer Network (MSDN) Web site: For more information about BizTalk Server hotfixes, click the following article number to view the article in the Microsoft Knowledge Base:
2003907 Information on BizTalk Server hot fixes
MSH Tab MSH8 MSH12 HL7 Accelerator

Article ID: 978260 - Last Review: 10/07/2011 14:27:00 - Revision: 2.0

Microsoft BizTalk Server 2009 Branch, Microsoft BizTalk Server 2009 Developer, Microsoft BizTalk Server 2009 Enterprise, Microsoft BizTalk Server 2009 Standard, Microsoft BizTalk Accelerator for HL7 1.0 Enterprise Edition

  • kbbtsaccelerators kbbiztalk2009presp1fix kbsurveynew kbqfe kbautohotfix kbexpertiseadvanced KB978260