Incorrect RFC connection setup:
RfcOpen from an RFC client program was confirmed with RFC_HANDLE_NULL.
The error text in the trace file (dev_rfc or RFCxxx.TRC on 16-bit Windows) or for RfcLastError is:
- sapdpxx unknown (in earlier Releases: not found)
- sapgwxx unknown (in earlier Releases: not found)
Error "sapgwxx unknown" (for earlier releases: not found), and can also occur for RfcAccept in an RFC server program.
Cause and prerequisites
Incorrect TCP/IP configuration ("services" file)
Ask your R/3 System administrator for the "service" of the affected R/3 message server (sapms
(UNIX: /etc/services, NT:
The following are valid as defaults:
When inserting this into this file, pleas ensure that the last entry is always terminated with a