selected connection (on the pic) will be triggered in case request received by REST service (implemented with tRESTRequest/tRESTResponse components) cannot be matched (by request parameters: method, path, content type, etc.) with any other connections described in tRESTRequest component configuration.
and fields (described by the connection schema) will be automatically filled with information about problem request.
How can I create "wrong call" ? When I place a tRESTResponse component on the canvas and right click the component I only see "Trigger" I don't see "wrong call".