Solution : https://service.sap.com/sap/support/notes/35313 (SAP Service marketplace login required)
Key words : 
terms characterset codepoint codepage charactercode reason, call transaction sp12 ->character_sets ->character_set_checkdoes, -shell setenv lang de_de, /nixda                  correct error message, choosen sap codepage identifiers, + sap codepage number, call tranaction sick, inproper codepage handling, '1100' + nls locale identifier, operating system level
Related Notes : 
       
| 187864 | Linux: Locale Support on Linux | 
| 45619 | R/3 with several languages or several fonts | 
| 40815 | Single or Double byte installed ? (nls_check) | 
| 39763 | setlocale on Windows/NT and table TCP0C | 
| 39745 | setlocale on ReliantUNIX (SINIX) and table TCP0C | 
| 39739 | setlocale on Solaris (SunOS) and table TCP0C | 
| 39718 | setlocale on AIX and table TCP0C | 
| 39309 | setlocale on Digital UNIX (OSF/1) and table TCP0C | 
| 35316 | RSCP0101 -- codepage checker |