Symptom
Connection test in SM59 fails with the following:
Connection Test <Destination Name>
Connection Type SAP Connection
Connection Error
Error when opening an RFC connection (LB: service '<app server>' unknown at SAP-Serv
ERROR: service '<app server>' unknown
LOCATION: XXX on host XXX (wp ww)
DETAIL: NiPGetServByName: '<app server>' not found
CALL: getaddrinfo
COMPONENT: NI (network interface)
COUNTER: XXX
MODULE: XXX
LINE: XXX
RETURN CODE: -3
The following traces will appear in the correspondent trace files:
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Environment
- Operating System independent
- Database independent
- SAP NetWeaver
- SAP Web Application Server for SAP S/4HANA
- ABAP Platform
Keywords
Error when opening an RFC connection, LB: Hostname or service of the message server unknown, service '?' unknown, Service sapms<sid> unknown, SM59, /etc/services, %windir%\System32\drivers\etc\services, dev_rfc, /usr/sap/<SYS>/<instance name>/work, Connection Test, SAPOSS, SAP-OSS , KBA , BC-MID-RFC , RFC , Problem
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