Solution : https://service.sap.com/sap/support/notes/1488070 (SAP Service marketplace login required)
Key words : 
prerequisites program error solution program correction, server encoding characters, execute report rcn_save_variant, unicode system, -unicode system, -unicode variants, variant saved, big endian, filter criteria, terms unicode
Related Notes : 
       
| 1536359 | |
| 1486552 | |
| 1478263 | PSIS: dumps loading variants; servers w/ little & big endian | 
| 1477302 | |
| 1310720 | Collection Note for Unicode Systems with different endianess |