The present disclosure involves systems, software, and computer implemented methods for enabling synchronous editable signals in process modeling. One example method includes receiving, at a receiver component, a message from a sending component as part of execution of an integration scenario with an external system. The receiver component is an originator that is configured to send event data to at least one registered listener task that has been bound to the receiver. Each registered listener is provided with the event data upon execution and is enabled to enhance the received event data. The receiver component waits to receive a completion notification from each registered listener and generates an acknowledgement to be sent to the sending component, using the event data enhanced by the at least one registered listener. The generated acknowledgment is sent to the sending component.