Exception is a term we use to describe an event that occurs in the execution of a business process that is not normal. It does not imply that the event was unexpected, but rather that the event would not usually occur when the business process was executed under normal circumstances. In fact, part of designing a high quality process is ensuring that you anticipate exceptions that may occur and model exception handling logic into your process definition.
There are different kinds of exceptions that can occur in a business process. Broadly, we categorize these into two groups:
Business exceptions: These are exceptional circumstances that occur from a business point of view. For example, in an ordering process the unavailability of inventory to fulfill an order could be considered a business exception. With good business engagement and modeling practices, it is possible to understand most, if not all, possible business exceptions for a given business process...