Solution : https://service.sap.com/sap/support/notes/63620 (SAP Service marketplace login required)
Key words : 
==========================================================date        topic    short description----------------------------------------------------------------------12/feb/97    iii/    call program r310chg, /400 update migration release upgrade release maintenance level, ---------------------------------------------------------------------------------------------- 12/feb/97 >-------------------------short text, call program r310chg, additional key words, prerequisites solution caution, ibm platforms          department, send         change requests, db2/400-specific problems, program r310chg
Related Notes : 
       
| 53851 | AS/400: Upgrading application servers | 
| 53760 | AS/400: Procedure for journal receivers in upgrade | 
| 51428 | Additional Info: Upgrading to 3.1 FCS | 
| 33525 | Important information about SAP patches (< 3.1H) | 
| 11677 | Transports with event-controlled RDDIMPDP |