[Nsi-wg] Strict enforcement of service specific elements

Peoples, We will need to lock down the behaviour in the NSI 2.0 documentation, so i thought I would start the discussion. The service definition describes the service specific elements that must and may be present in the reserve/modify request. It is my current view that this list needs to be strictly enforced, and any elements found not part of the service definition results in an invalid request. If we do not perform strict checking then we will need to define the behaviour when an element is discovered that is not part of the service definition. Comments? John