The Notify activity allows a process instance to send data to a corresponding process instance containing a Wait activity or Receive Notification process starter. The Notify Configuration resource specified on the Configuration tab and the key specified on the Input tab create the relationship between the Notify activity and the corresponding Wait or Receive Notification. The data specified in the Notify’s input is sent to the Wait or Receive Notification that specifies the same Notify Configuration resource and has the same value for the key.
The Wait, Receive Notification, and Notify activities allow running process instances to communicate. See TIBCO ActiveMatrix BusinessWorks Process Design Guide for more information on inter-process communication.