You cannot configure the Property Schema Base properties of a property schema to use the PartContextPropertyBase option in Microsoft BizTalk Server 2004 (843330)

WORKAROUND

To work around this behavior, use Notepad to manually add the PartContextPropertyBase option to the Property Schema Base property.

Microsoft provides programming examples for illustration only, without warranty either expressed or implied. This includes, but is not limited to, the implied warranties of merchantability or fitness for a particular purpose. This article assumes that you are familiar with the programming language that is being demonstrated and with the tools that are used to create and to debug procedures. Microsoft support engineers can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific requirements. To manually modify the property schema, follow these steps:

1. Right-click the PropertySchema.xsd file that you want to modify, click Open With, and then click Notepad.
   
   Note If Notepad is not listed, click Choose Program on the Open With menu, and then click Notepad in the list of programs.
2. In the following line of code, replace the reference to the MessageContextPropertyBase option or the MessageDataPropertyBase option with the PartContextPropertyBase option, as shown in the following code samples:
   
   Original:

   <b:fieldInfo propertyGuid="ec9c12f5-0ee7-40ea-ae56-3ced30f2744d" propSchFieldBase="MessageContextPropertyBase" /> 

   Replace with:

   <b:fieldInfo propertyGuid="ec9c12f5-0ee7-40ea-ae56-3ced30f2744d" propSchFieldBase="PartContextPropertyBase" />

3. In Notepad, save the changes that you made to the PropertySchema.xsd file, and then open the file in Microsoft Visual Studio .NET.
4. Note the changes to the Property Schema Base option in the properties of the schema.