In the spec AUTO_COMMIT is only referenced once; from the /bookings/one-stop endpoint. This suggests that AUTO_COMMIT only applies to one-stop. As per the wiki documentation this should also apply to regular bookings. For completeness sake this should be added to the documentation of the other booking endpoints.
In addition it is not really clear from which version AUTO_COMMIT is supported in the first place. Adding it explicitly to the documentation of all relevant booking endpoints, makes this much clearer.