Solution : https://service.sap.com/sap/support/notes/101220 (SAP Service marketplace login required)
Key words : 
sgrw_om sgrw_ps sgrw_pc sgrw_sl sgrw_pca sgrw_ec sgrw_lis reason, language disk traditional chinese sr1, language disk simplified chinese sr1, ~ftp/general/r3server/language/note, job sap language-import-job-3, directory /usr/sap/put/data, profile parameter zcsa/installed_languages, upgrade control program r3up, language disk japanese sr1, language disk korean sr1
Related Notes : 
       
| 315377 | Additional information about upgrading to 3.1I SR1 | 
| 123235 | Language installation after patch import | 
| 102950 | Additional Info: Upgrading to 3.1I DB2/400 | 
| 101221 | Space requirement for the language import 3.1I | 
| 91594 | Additional Info: Upgrading to Release 3.1I | 
| 77236 | Transport of customer translations between systems | 
| 73606 | Supported Languages and Code Pages | 
| 36156 | Language Availability 3.0x/3.1x | 
| 18601 | Frequently asked questions on language transport |