Solution : https://service.sap.com/sap/support/notes/858387 (SAP Service marketplace login required)
Key words : 
relevant support package, tl            message number, 304            message short text, message class, transaction i18n, transaction smlt, unicode systems, terms smlt, nls reason, correction instructions
Related Notes : 
       
| 732205 | New Function Group SCPT to eliminate domain CPLANGS | 
| 42305 | RSCPINST (I18N configuration tool) |