Will change: " A shared identifier common to all requests that were authorized more or less simultaneously by a single author, representing the identifier of the requisition or prescription. " to " A shared identifier common to multiple independent Request instances that were activated/authorized more or less simultaneously by a single author.  The presence of the same identifier on each request ties those requests together and may have business ramifications in terms of reporting of results, billing, etc.  E.g. a requisition number shared by a set of lab tests ordered together, or a prescription number shared by all meds ordered at one time."