Solution : https://service.sap.com/sap/support/notes/310852 (SAP Service marketplace login required)
Key words : 
initial screen click 'enter conditions', characteristic selection option blank, include additional support packages, selection dialog box, menu 'table view' -> ', menu 'edit -> delete', start report rpumkg00, individual support package, transport object requires, function module pe03_after_import_method
Related Notes : 
       
| 325592 | Performance problems when generating features | 
| 321714 | PE03: Technical information on features | 
| 202169 | Additional Info: Upgrade to 4.6C - DB2/400 | 
| 178823 | Additional Information: Upgrade to 4.6B - DB2/400 | 
| 141661 | Additional Info: Upgrading to 4.5B DB2/400 | 
| 48184 | Upgrade: Stopping a running R3up or SAPup |