Solution : https://service.sap.com/sap/support/notes/948691 (SAP Service marketplace login required)
Key words :
LIST_TO_ASCI, Unicode
Related Notes :
| 1499385 | Lost layout after text download |
| 1319517 | Unicode Collection Note |
| 540911 | Unicode restrictions for R/3 Enterprise, ECC 5.0, ECC 6.0 |