Solution : https://service.sap.com/sap/support/notes/802658 (SAP Service marketplace login required)
Key words : 
< cookie-config>     <cookie>      <type>session< /type>      <path>application</path>    </cookie>  </cookie-config> solution, sap/<app>/servlet_jsp/<alias>/root/web-j2ee-engine, /usr/sap/< sid>/<instance>/j2ee/cluster/server[, terms cookie jsessionid domain pathsession time, session cookie, session cookie 6, jsessionid cookie, j2ee engine sends, j2ee engine offers, path attribute
Related Notes : 
       
| 969660 | 6.20/6.40 Patch Collection Installation : Unix | 
| 808869 | Java Components for mySAP ERP 2004 SR1 | 
| 791765 | Mixed JSESSIONID Cookies from Different Servers | 
| 774661 | ERP 2004 SP Stack 5 (12/2004) Release and Information Note |