Solution : https://service.sap.com/sap/support/notes/766913 (SAP Service marketplace login required)
Key words : 
terms ibm eserver iseries, portable application solution environment, sap web application server, sap standard sd benchmark, sap software distribution center, /400 os/400 v5r2 pase reason, reduced cpu consumption, pase runtime environment, sap system based, sap kernel run
Related Notes : 
       
| 1338386 | Upgrade to SAP NetWeaver 7.0 EHP2 ABAP (IBM DB2 for i) | 
| 1168235 | Upgrade to SAP NetWeaver 7.0 EHP1 ABAP (IBM DB2 for i) | 
| 822296 | Additional info: Upgrade to SAP NW 2004s AS ABAP (iSeries) | 
| 664679 | Installing 6.40 kernel in SAP WEB AS 6.10/6.20 | 
| 661569 | Additional Information: Upgrade to SAP Web AS 6.40: iSeries | 
| 500297 | Additional Information: Upgrade to SAP Web AS 6.20: iSeries |