That is permitted for MEPs with no input (E.g. Notification from the server)
and not for request/response MEPs, which is all we have in BPEL.
Ugo Corda wrote:
> Additionally WSDL 2.0 replaces messages with GEDs which can be empty as
Yes, but in WSDL 2.0 the reference to GEDs is optional within the operation
description. From that point of view, making our variable optional would in
a way capture the direction where WSDL is going..