Will add a usage note to Request indicating the following: The amount of information needed for a Request to be actionable can vary by circumstance. Some request instances may not be "fully specified" - additional information from protocol, patient preference and/or professional decision-making may be necessary before the authorized action can occur. For example, a MedicationOrder might be specified without indicating a strength or route in situations where the pharmacy (or even nursing information) has the authority to determine those parameters. A VisionPrescription might not be actionable until frames have been chosen and the necessary measurements of the patient's face have been taken to allow the lenses to be positioned appropriately within the frames. All requests with an intent of "order" authorize something. Whether what is authorized is sufficient to be immediately actionable depends on who is fulfilling the order and the context in which the fulfillment request is made. The determination of whether a given "request" is actionable may be made by the systems involved or the humans being asked to act. As well, the existence of a "Request" instance doesn't necessarily imply that fufillment will be requested immediately - or even ever. The decision to request fulfillment may be delegated to the patient or to down-stream practitioners. Such fufilling practitioners may need to capture additional information prior to executing the fufillment.