Though you can use the simple entity insert to create a departure like this:

https://data2011.peak15systems.com/beacon2016/service.svc/insert/entity/p15_tripdepartures?
token=yourtokenhere
&p15_tripid=[tripname or trip GUID}
&p15_startdate=2019-01-01
&p15_enddate=2019-01-10
&p15_tourdays=10
&p15_minguests=2
&p15_maxguests=2
&p15_paymentscheduleid=[payment schedule name or GUID]
&p15_departure_guesttypes=0
&p15_planforleaders=0
&transactioncurrencyid=[currency name or GUID]
&statuscode=Quoting


You can also choose to create a departure as a copy of another departure like this:

https://data2011.peak15systems.com/data2011/service.svc/insert/complex/copyDeparture?
token=yourtokenhere
&p15_tripdeparturesid=[departure name or GUID]
&p15_startdate=2019-01-01
&p15_tourdays=10


Sending in p15_startdate is optional.  If you don't send in a start date, the new departure will keep the start date of the original departure.

Sending in p15_tourdays is also optional.   If you don't send in tour days, the new departure will keep the same length as the original departure.


When you copy a departure, it copies all the costs and prices over as well.