Solution : https://service.sap.com/sap/support/notes/827999 (SAP Service marketplace login required)
Key words :
RFC, tRFC, MDMP tables, SPRAS, code page/language vector
Related Notes :
| 1319517 | Unicode Collection Note |
| 828000 | Rfc Patch Collection 11 2005 |
| 814707 | Troubleshooting for RFC connections Unicode/non-Unicode |