The figure shows a screenshot of the OrderBooking_OrderBookingService.esbsvc page in JDeveloper.
The Routing Service section contains these fields:
The Name field is set to "OrderBookingService".
The System/Group field is set to "OrderBooking".
The Description field is blank.
The WSDL File field is set to "OrderBooking_OrderBookingService.wsdl".
The Port Type field is set to "initiate_ppt".
The Invocable from an external service field is selected.
The Routing Rules section contains a line for "initiate".