The web service message root element names in the XML schemas generated by default generation of Interpretive and Compiled XML conversion do not match.
You may need to change the generation default of the Compiled XML conversion to match the Interpretive conversion case. Doing this lets you change the conversion type from interpretive to compiled, if needed later, without having to republish the WSDL file and without changing code in clients of the web service.
When generating the artifacts for Compiled XML conversion you can use the wizard to change the root element name to match the Interpretive XML conversion. This option is called "Root element name" and is located in the Generation Options page, on the WSDL and XSD options tab, in the request and response XML Schema properties group.
For example, the COBOL group named A-B-C causes the Interpretive conversion artifacts to have the message root element name "a_b_c". The default Compiled conversion artifacts have the root element name "ABC".
If necessary, the ABC can be changed to a_b_c by using the “Root element name” option in the Generation Options page so that it can match the the WSDL generated for the interpretive conversion.