Modeling execution errors with WS-BPEL 2.0 standard faults

The WS-BPEL 2.0 specification defines a standard set of faults. Each of those faults is defined to represent an erroneous behavior that could occur during a business process execution. Examples of such standard faults include the following:

• correlationViolation: It is thrown when the contents of the messages that are processed in <invoke>, <receive>, <reply>, <onMessage>, or <onEvent> do not match specified correlation information

• uninitializedVariable: It shows a fault representing an attempt to refer or access the data in an uninitialized variable

• uninitializedPartnerRole: It is thrown when attempting to refer a partner link which has an uninitialized partner role

• selectionFailure: It is thrown when a selection operation performed either in a function, such as bpel:getVariableProperty or in an assignment, encounters an error

These faults are generated by BPEL at runtime.