Failed to ping JCo destination error

Hello,

I got this error "<b>Failed to ping JCo destination <wd-app-name></b>" while trying to ping an R/3 server from Web Dynpro Content Administrator. Any idea what could be wrong?

<u>Additional info:</u>

Pinging the server from command prompt is OK

The R/3 have been properly registered in the SLD

Connection to SLD is OK

Added an entry <b>sapms<SID> 36<instance#>/tcp</b> in the services file

Restarted the machine

What have i missed? Any help will be appreciated.

Thanks,

Teecheu