Solution : https://service.sap.com/sap/support/notes/68727 (SAP Service marketplace login required)
Key words : 
transport request  cd '/usr/sap/trans/bin'  tp 'addtobuffer sapk31gas8 <sid>'  tp 'import sapk31gas8 <sid>', log file         /usr/sap/put/log/slog31g, lst           /usr/sap/put/cofiles/k30fas7, cd general/r3server/patches/rel31g/os400/6, /usr/sap/put/bin/append, sap           /usr/sap/put/data/r30fas7, <hostname>_<sid>_<instance_number>          -, /   important general remarks ii/  errors, upgrade procedure additional key words, transport program tp         generates
Related Notes : 
       
| 71297 | AS/400: Links to debug kernel library missing | 
| 71258 | AS/400: Cross-ref. files defective? RCLSTG *DBXREF | 
| 70932 | INST: AS/400 post-installation/upgrade steps 3.1G | 
| 68434 | space requirements for language import 3.1G | 
| 68432 | Current note on the 3.1G Language Import | 
| 66985 | AS/400: SQL catalog points to wrong library | 
| 64570 | Additional Info: Upgrading to 3.1G | 
| 60252 | iSeries: TCP/IP host name configured incorrectly | 
| 53971 | AS/400: Elimin. VBHDR inconsistency before upgrade | 
| 53851 | AS/400: Upgrading application servers | 
| 53760 | AS/400: Procedure for journal receivers in upgrade | 
| 49701 | iSeries: Info and recommendations for kernel libraries (46D) | 
| 48007 | SAP Kernel 3.0x/3.1x DB2/400: Released operating systems |