Solution : https://service.sap.com/sap/support/notes/47933 (SAP Service marketplace login required)
Key words : 
individual upgrade phases  ii/  post upgrade operations, topics  ===============================================   0/  pre upgrade operations, additional key words japan, german version exists, test& assembly members, errors occured, note tells, errors found, prerequisites customer, add information
Related Notes : 
       
| 47976 | Additional Info: Upgrading to Japanese 30E ADABAS | 
| 47975 | Additional Info: Upgrading to Japanese 30E INFORMIX | 
| 46077 | Latest note on the language import 3.0E | 
| 45790 | Change English (and German) in table TCP0C | 
| 45707 | Japanese Language Transport 3.0D | 
| 45589 | Additional Info: Upgrading to 3.0E ORACLE | 
| 43288 | Additional Info: Upgrading to 3.0E | 
| 42305 | RSCPINST (I18N configuration tool) | 
| 40705 | TCP0B is incomplete | 
| 39739 | setlocale on Solaris (SunOS) and table TCP0C | 
| 39718 | setlocale on AIX and table TCP0C | 
| 39473 | locale and TCP0C | 
| 38930 | Current note on the language import for 3.0D | 
| 38677 | setlocale on HP-UX and table TCP0C | 
| 13876 | SAPGUI: Abnormal Termination, SAP_CODEPAGE <> 1100 |