2497518 - Replication Server is reporting "Downstream Replication Servers do not support new feature commands"

Replication Server is reporting a warning message at errorlog.

R.S. errorlog :

E. 2017/06/26 14:00:53. ERROR #30046 DIST(156 ASEPRI.DBREP) - e/generic/sre/dvre.c(158)
Downstream Replication Servers do not support new feature commands. New feature commands will be skipped for 'ASE_pri.DBPROD'.

- The admin show_route_versions output,  you can see the status version is "Need route upgrade"
  
   Source                               Destination                       Route Version    Proposed Version     status         
   ------------------------------ ------------------------------                -------------       ----------------             ------------------------------
   RSPTAPRD                        RSPTARTLPRD                    1571                1571304                 Need route upgrade

SAP Replication Server 15.7.1

#30046 , Downstream Replication Servers, Need route upgrade, not support new feature, New feature commands will be skipped, route , KBA , BC-SYB-REP , Sybase Replication Server (standalone) , Problem