RFC Communication - error CPIC return code 020, SAP return code 665

Hello,
I have created RFC destination for connecting SCM system from Solution Manager. Both the systems are Unicode.
I am getting the following error --
ERROR                service '?' unknown
LOCATION             SAP-Gateway on host gva4103 / sapgw00
COMPONENT            NI (network interface)
COUNTER              4028
MODULE
LINE
RETURN CODE          -3
SUBRC                    0
RELEASE              640
TIME                 Mon Apr 24 11:28:21 2006
VERSION              37
And in SM21, I am getting following description
Communication error, CPIC return code 020, SAP return code 665
Following are the things I have checked..
1. RFC destination user checked, password reset in SM59 and in the target system
2. checked entries in /etc/services - Entry sapgw03 is present.
Please let me know what all things I need to check.
Thanks and Regards,
Vaibhav

I solved the problem by myself.
The problem was with the entry in services file only.
I was checking the file on Target system, which had the entry. There was no entry in Host system services file. After modifying the file, the connection now works fine.
Thus for RFC connection, entry of the target system gateway MUST be there in /etc/service of Host system.
Regards,
Vaibhav

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Hi All,
Our SAP system receives inbound IDOCS from an external system (throgh TIBCO),
i have configured inbound partner profile in WE20,
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I have copied the text from the system log entries:
A CPIC function has failed. The conversation ID and CPIC function are
specified in the system log entries. Use the conversion ID to find more
detailed information about the error in the system log for the SAP
gateway.
Meaning of the SAP return codes:
1) Gateway errors:
221,,Error in CPIC-SS
222,,Storage bottleneck
223,,Network read error
224,,Network write error
225,,Invalid request
226,,No connection yet
227,,Gateway process terminated
228,,Shared-Memory problem(read)
229,,Shared Memory problem(write)
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231,,No free gateway process
232,,Error when starting gateway proc.
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MNo.
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Hi
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Errors When Starting Remote Programs Using Remote Shell
When you use remote shell to start CPIC programs on other hosts, the following conditions apply:
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Read more from help
http://help.sap.com/saphelp_nw04s/helpdata/en/99/5f8c0bcb7d4280aa862254cffceada/frameset.htm

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Hi guys,
Need your advice, my SAP system suddenly appear this messages ( SM21).
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Communication error, CPIC return code 017, SAP return code 236
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Hi Uday,
My SAP using ABAP. Version 4.7
All RFC working fine except for the OSS
Error message
Details Page 2 Line 22 System Log: Local Analysis of ALBANIA                  1
Time     Ty. Nr Cl. User         Tcod MNo Text
13:52:36 DIA 01 800 SYSADM            R49 Communication error, CPIC return code 017, SAP return code 236
Details
Recording at local and central time........................ 27.03.2009 13:52:36
Task................ 57584 . 01 D1 Dialog work process No. 01
User................ SYSADM
Client.............. 800
Terminal............ 10.0.38.
Session............. 1
Transaction code....
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Removing references to systems and ports
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RFC Communication - error CPIC return code 020, SAP return code 665

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