The data sent between the activities is defined by a Notify Configuration shared configuration resource. The Notify activity only sends information to the Receive Notification process starter or Wait activity that specifies the same Notify Configuration resource. The schema supplied to the Notify Configuration resource can be empty, if you do not wish data to be sent between processes. However, the Notify Configuration resources must be the same for the Notify, Receive Notification, or Wait activities if they are to be used to communicate with each other.