This topic is related to the Base EDI adapter, which has been deprecated in Biz Talk Server 2006 R2.

The Base EDI adapter can be used in upgrade scenarios, but for new installations of Biz Talk Server 2006 R2, use the native EDI and AS2 functionality.

If you change the schema to XHTML5, the editor checks the markup in your page against the XHTML5 schema.

Open Visual Studio and create a XML file as in the following:2.

Go to the XML menu and click on the "Create Schema" command.3.

It simply provides you with feedback that the markup in the page does not conform to the schema for the chosen markup language.

Visual Studio includes schemas for standards such as HTML5, XHTML5, HTML 4.01, and XHTML 1.1.

See the documentation on the XML Editor in Visual Studio.

While this article applies to Visual Studio 2005, it provides a graphical view of the capabilites that are present in 2005 and onwards.For example, if you are using HTML5, you can select whether the following conditions show as errors: In a web page, it is possible to include blocks of markup that are declared with their own namespace.For example, a block of embedded XML in a page might contain a namespace declaration for its own elements.For the latest documentation on Visual Studio 2017, see XML Document Validation on docs.The XML Editor checks XML 1.0 syntax and also performs data validation as you type. Markup validation works like the spelling checker in a word-processing program.