IBM BPM, V8.0.1, All platforms > Authoring services in Integration Designer > Services and service-related functions > Work with data handlers, faults and registries
Handling faults in bindings
A fault or error that occurs at run time needs to be handled in some way by an application.
You can configure your import and export bindings to handle faults (for example, business exceptions) that occur during processing. You can set up a fault handler at three levels: you can associate a fault handler with a fault, with an operation, or with a binding. For import bindings, you can also set up a fault selector to determine whether a response is a fault and, if so, the name of the fault.
A fault data handler processes fault data and transforms it into the correct format to be sent by the export or import binding. For an export binding, the fault data handler transforms the exception business object sent from the component to a response message that can be used by the client application. For an import binding, the fault data handler transforms the fault data or response message sent from a service into an exception business object that can be used by the SCA component. For import bindings, the fault data handler calls the fault selector, which determines the name of the fault.
You can specify a fault data handler for a particular fault, for an operation, and for a binding. If the fault data handler is set at all three levels, the data handler associated with a particular fault is called. No further fault processing occurs. If fault data handlers are set at the operation and binding levels, the data handler associated with the operation is called. No further fault processing occurs.
- Faults overview
Errors issued at run time in a Service Oriented Architecture (SOA) application can either be from a Service Component Architecture (SCA) application to another non-SCA application or from a non-SCA application to the SCA one.- Prepackaged fault components
Some prepackaged fault components are provided for the bindings you work with.- Developing a custom fault selector
To develop your own custom fault selector, you must implement the FaultSelector interface, implement a method in the BindingContext interface and understand Service Message Object (SMO) headers.