FIX: "The formatter threw an exception while trying to deserialize the message" error when the WCF-SAP adapter in BizTalk Adapter Pack executes an RFC or BAPI to an SAP system

Article ID: 2563231 - View products that this article applies to.
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This article applies to the following product:
  • BizTalk Adapter Pack 2.0
  • BizTalk Adapter Pack 2010
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SYMPTOMS

Consider the following scenario:
  • You install Microsoft BizTalk Adapter for mySAP Business Suite 3.0 on a computer.

    Note BizTalk Adapter for mySAP Business Suite 3.0 is included in the Microsoft BizTalk Adapter Pack 2.0 or in the Microsoft BizTalk Adapter Pack 2010 .
  • The WCF-SAP adapter executes a remote function call (RFC) or Business Application Programming Interface (BAPI) to an SAP system.
  • The SAP system returns a negative decimal value of the RFC_BCD data type.
In this scenario, you may receive an error that resembles the following:
The formatter threw an exception while trying to deserialize the message:
There was an error while trying to deserialize parameter http://Microsoft.LobServices.Sap/2007/03/Rfc/:EXPHEADER.
The InnerException message was 'There was an error deserializing the object of type microsoft.lobservices.sap._2007._03.Types.Rfc.BAPIMEPOHEADER.
The value '-*<decimal value>' cannot be parsed as the type 'decimal'.'

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CAUSE

This issue occurs because the RFC_BCD value is converted to the .NET String data type incorrectly.

When the RFC_BCD value is converted to the .NET String data type, the WCF-SAP adapter does not allocate enough memory locations to convert the value. Therefore, an exception is encountered.
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RESOLUTION

Cumulative update information

For BizTalk Adapter Pack 2010

The hotfix that resolves this issue is included in cumulative update package 2 for BizTalk Adapter Pack 2010. For more information about how to obtain this cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:

2572999
(http://support.microsoft.com/kb/2572999/ )
Cumulative update package 2 for BizTalk Adapter Pack 2010

For BizTalk Adapter Pack 2.0

The hotfix that resolves this issue is included in cumulative update package 3 for BizTalk Adapter Pack 2.0.

For more information about how to obtain the cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
2557150
(http://support.microsoft.com/kb/2557150/ )
Cumulative update package 3 for BizTalk Adapter Pack 2.0

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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MORE INFORMATION

For more information about SAP data types, visit the following MSDN website:
General information about SAP data types
(http://msdn.microsoft.com/en-us/library/cc185537(BTS.10).aspx)
For more information about BizTalk Server hotfixes, click the following article number to view the article in the Microsoft Knowledge Base:
2003907
(http://support.microsoft.com/kb/2003907/ )
Information about BizTalk Server hotfixes

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Properties

Article ID: 2563231 - Last Review: August 31, 2011 - Revision: 3.0
APPLIES TO
  • Microsoft BizTalk Adapter 2.0 for SAP
Keywords: 
kbqfe kbfix kbbtsadapters kbsurveynew kbexpertiseadvanced KB2563231
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