Organizations have business rules for managing business
objects. In many cases, business rules regulate how
important business objects change states and are
applicable only when object is in a particular state.
Requirement modelling is one of the important tools to
understand these changes. The states also serve as a part of
terminology, which will be used in other business and
requirements models. State machine diagrams should be
created only for those business concepts that have dynamic states. Business modellers should define triggers on all
transitions in state diagram.