A web service returns either a response message or it returns a fault. A fault is an error. The web service can generate different faults based on the errors that occur.
The Web Service Consumer transformation can return the following types of faults:
SOAP errors that the WSDL defines. Configure output error ports that return the faults in the web service response message. For a SOAP 1.1 binding, the Data Integration Service returns the fault message, fault code, fault string, and fault actor elements for the fault. For a SOAP 1.2 binding, the Data Integration Service returns the fault message, code, reason, node, and role elements for the fault.
Generic SOAP faults
The web service generates generic SOAP faults at run time. The fault elements are different for a SOAP 1.1 binding and a SOAP 1.2 binding. The WSDL does not define generic SOAP faults. Generic SOAP faults include authentication failures and SOAP request errors.
The Developer tool adds the HTTP fault output port when you enable HTTP error handling in the transformation. The Data Integration Service returns HTTP errors from the web service in a single string port. An HTTP error includes an error code and a message.
If the SOAP response from the web service has XML data that is not valid, the Web Service Consumer transformation returns an error.
You can configure whether to treat SOAP faults as errors. When you enable Treat Fault as Error and a SOAP fault occurs, the Data Integration Service increments the error count for the mapping. The fault appears in the message log.