To share types, use the /sharetypes flag with wsdl.exe. For example,

        wsdl.exe /sharetypes 
        http://localhost/QuickstartV20/webservices/Samples/TypeSharing/vb/Server/TypeSharingService1.asmx
        http://localhost/QuickstartV20/webservices/Samples/TypeSharing/vb/Server/TypeSharingService2.asmx

Step 1: Create Order at Ordering Center (create the type instance that will be shared)

Step 2: Update Order at Shipping Center with New Ship Date (share the type instance with a second service)