BizTalk Error for Schemas With Hyphenated Root Node

While building a schema that was generated from a SQL Server stored procedure, I ran into this exception:

Specify a valid .NET type name for this root node. The current .NET type name of this root node is invalid (it is a reserved BizTalk Keyword or is an invalid C# identifier).

It turned out that the issue was the root nodes created for the typed procedure contained hyphens (because the stored procedure name contained hyphens). C# class names disallow the use of hyphens.

The solution was to open the properties dialog box for the root node (in this case there were two root nodes: one for the request and another for the response) and edit the RootNode TypeName property to remove the hyphens. This fixed the issue.

I found this solution on the MSDN forums here:

https://social.msdn.microsoft.com/Forums/en-US/04a80789-6073-453b-b531-2188416e45af/biztalk-problem-with-schema-elements-which-have-hyphens?forum=biztalkgeneral