<security mode="TransportWithMessageCredential">
<message clientCredentialType="UserName"/>
Configure the service interface to process all actions: (otherwise a mismatch error occurs):
[OperationContract(Action = "")]*
string HelloWorld(string value);
SAP Proxy Configuration in transaction SOAMANAGER:
!https://weblogs.sdn.sap.com/weblogs/images/251733829/proxy2.jpg|height=479|alt=image|width=683|src=h...!</body>