236,,No connection to gateway ???

Hello Experts,
We are getting following error in one of our production system very frequently in sysstem logsSM21
"Communication error, CPIC return code 020, SAP return code 236"
Error says "236,,No connection to gateway"
Could you please suggest what may be the reason for getting this error ?
What needs to be cheked from Basis side.
Thanks
Regards,
Amber S

Hi Amber,
Could you please suggest what may be the reason for getting this error ?
The errors you encounter indicate that the problem lies in the
underlying network layer. This error is network error or due to the load on the server refusing the connect from the server. Connection to gateway could not be established. Normally this is because a RFCs resource lack or connect
time-out.
What needs to be cheked from Basis side?
1.increase the parameter rdisp/max_gateways to 200.
2.Also check if your /etc/services files have the correct entries.
3. Set the below parameters if your release is below 700.
gw/cpic_timeout = 1800
gw/gw_disconnect = 0
4. And also check the notes..590929, 559119, 34116
Hope it resolves your issue.
Thanks
Kishore

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