Which end of a request was responsible for a service error response.
            
 Declaration Syntax
 Declaration Syntax| C# | 
public enum ErrorType
 Members
 Members| Member | Description | 
|---|---|
| Sender | The sender was responsible for the error, i.e. the client
            request failed validation or was improperly formatted. | 
| Receiver | The error occured within the service. | 
| Unknown | An unrecognized error type was returned. |