Extracting XSD from WSDL

Hi Everyone,

I am looking at a very simple scenario: Flat file to Web Service Through SAP XI.

I have created a web service in SAP ECC system. With the help of WSDL document of the web service i created a Message Interface(External Definitions).

On the other hand, i created the data type, message type and message interface for the flat file. Now, When i want to do the message mapping, I only have one message type.

I want to Extract XSD from the WSDL document of the webservice in order to do the message mapping. Can you help me out with this.

Thanks

chan