Solution : https://service.sap.com/sap/support/notes/100195 (SAP Service marketplace login required)
Key words : 
additional key words conversion, conversion report rpucpc00, restart program rpucpc50, cluster pc, sap release 3, system terminates, error message, system selects, internal table, type ranges
Related Notes : 
       
| 67921 | References to upgrade notes concerning HR 3.1G-4.7 |