Solution : https://service.sap.com/sap/support/notes/885583 (SAP Service marketplace login required)
Key words : 
byte mode solution coding, terms msa-hh, prerequisites wrong conversion, character mode, unicode systems, unicode correction, bp numbers, symptom factsheets, factsheets reason, factsheets
Related Notes : 
       
| 902083 | Unicode Collection Note for CRM 4.0 |