In business modelling for transition triggers, most people use informal signals that in most cases correspond to actions of business roles. Also, time and property change triggers are used to express various states changes according to time or data based business rules. It is possible to define inner triggers that happen inside one state and doesn’t fire a transition. In inventory management system, register (data store) is checking for availability of reservation for supplier. If available, supplier is assigned by a unique id to them and after that issue the item. Manufacturer notifies the overdue of product item and after one year the identified item will be notified as lost or damaged. Example of this concept is shown in Figure 3.