Web Services between .NET and Java

Although SOAP is now a standard, different implementations of web services are using it in ways that sometime makes the interoperability with other SOAPs hard if not impossible. Web Services between .NET, Java and MS SOAP Toolkit written in 8/2001 explains that accessing Apache SOAP for Java Service via a .NET client does not work because xsi:type is required in Apache SOAP for Java.

Apperently since then some efforts has been done in the Soap Interop movement. Dev4Net :: Web Service Interoperability summaries the current situation between the Microsoft Soap Toolkit 2.0 sp2, Apache for the Apache Axis (Alpha 2) implementation, and .NET for the Microsoft ASP.NET. Apparently interoperability between .NET Client -> Apache Service seems to work. Interoperability with Other SOAP Implementations give more in depth information on the interop problems with the Apache Soap implementation.