Solution : https://service.sap.com/sap/support/notes/1428151 (SAP Service marketplace login required)
Key words : 
prerequisites operating system functions, patch level 39in addition, sap user group r3group, user <sid>adm logs, patch level 321                  patch dltr3sys, patch level 321                  patch r3inlpgm, patch level 247                  patch dltr3sys, patch level 247                  patch r3inlpgm, user <sid>adm, patch level 84sap_release 7
Related Notes : 
       
| 1683418 | IBM i: System maint. diffs between 7.20 and 4.6D to 7.11 | 
| 1632755 | IBM i: Description of command APYSIDKRN |