IBM BPM, V8.0.1, All platforms > Authoring services in Integration Designer > Services and service-related functions > Access external services with adapters > Configure and using adapters > IBM WebSphere Adapters > FTP > Overview of IBM WebSphere Adapter for FTP > Technical overview
Business faults
The adapter supports business faults, which are exceptions that are anticipated and declared in the outbound service description, or import. Business faults occur at predictable points in a business process, and are caused by a business rule violation or a constraint violation.
Although IBM BPM and WebSphere Enterprise Service Bus support other types of faults, the adapter generates only business faults, which are called faults in this documentation. Not all exceptions become faults. Faults are used only when the outbound operations are configured with response type. Faults are generated for errors that are actionable, that is, errors that can have a recovery action that does not require the termination of the application.
For example, the adapter generates a fault when it receives a business object for outbound processing that does not contain the required data or when the adapter encounters certain errors during outbound processing.
The faults for a particular operation are enabled only if that operation has a response configured.
Fault business objects
The external service wizard creates a business object for each fault that the adapter can generate. In addition, the wizard creates a WBIFault superset business object, which has information common to all faults, such as the message, errorCode, and primaryKeySet attributes as shown in Figure 1.
Figure 1. The structure of the WBIFault business object
The adapter enables you to declare faults. Manual configuration of faults is not required.