Solution : https://service.sap.com/sap/support/notes/869322 (SAP Service marketplace login required)
Key words :
rscpLangCPListGetCPdstrscpLangCPListGetCPtrySYSTEM_FAILURECOMMUNICATION_FAILURE
Related Notes :
| 814707 | Troubleshooting for RFC connections Unicode/non-Unicode |
| 302063 | Correspondence Language |
| 19466 | Downloading SAP kernel patches |