Update _3gpp-common-filemanagement.yang

          }

          refine status {

           description "Limits to status applicable for file download.";

             enum NOT_STARTED ;

             enum RUNNING ;

             enum CANCELLING ;

             enum FINISHED ;

             enum FAILURE ;

             enum CANCELLED ;    

           must "true() = 'NOT_STARTED'";

           must "true() = 'RUNNING'";

           must "true() = 'CANCELLING'";

           must "true() = 'FINISHED'";

           must "true() = 'FAILURE'";

           must "true() = 'CANCELLED'";   

          } 

    }

  }