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2128985 - Http error 400 bad request with no response from backend SMP server when executing an http request through Relay Server 16.


  • Seeing 400 Bad request with no response from backend server error in a browser or client app.
  • RSOE log shows:
    E. OEE1036: A network connection was closed by the Relay Server or an intermediary while the Outbound Enabler was reading from it
  • Relay Server log shows:
    E. <3496.732.F0B0Dn> <xxx>  RSE3004: Communication error [SYS10054: An existing connection was forcibly closed by the remote host...] occurred while reading from down channel of backend server 'RSOE BOX' in backend farm



  • SAP Sybase Relay Server Version
  • SAP Sybase Outbound Enabler Version
  • SAP Mobile Platform 2.3.4 and above
  • Firewall and Load Balancers between Relay Server(RS) and Relay Server Outbound Enabler(RSOE)


SAP Mobile Platform 2.3


Cisco signature 7212 packet SMP , KBA , MOB-SUP-RT-IMO , SUP Runtime Mobile Office , Problem

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