How to Create a Map without Maps
If you have XSLT code you have been using to convert instance messages, you can use that code directly instead of creating a map.
Using your XSLT code involves creating an empty map and setting its Custom XSLT Path grid property. If your XSLT code uses external .NET assemblies, you also need to create a custom extension XML file. For information about the structure of a custom extension XML file, see the Custom Extension XML (Grid Property) in the UI guidance and Developers reference.
Use custom XSLT code in place of a map
Create an empty BizTalk map in your project and set the source and destination schemas.
For information about creating the map and setting the schemas, see Creating Maps.
In the Grid view, click the mapper grid.
The Properties window shows the Grid properties.
In the Properties window, select Custom XSLT Path and click the ellipsis (…) button.
In the Open dialog box, navigate to the file and click Open.
The Custom XSLT Path property is set.
BizTalk Mapper supports XSLT 1.0 only. Using XSLT 2.0 in BizTalk Mapper is not supported.