Solution : https://service.sap.com/sap/support/notes/826464 (SAP Service marketplace login required)
Key words : 
delta/repeat/init request set, previously imported support packages, 10 content            import support package 14, 0b            import support package 20, written error messages, <system id> file, sufficient patch level, incorrect table entries -, 50            import support package 02, 1 content support package 14
Related Notes : 
       
| 1293745 | Add. info.: Upgrade to SAP NetWeaver 7.0 EHP 1 SR1 (ABAP) | 
| 1146580 | Add. info.: Upgrade to SAP NetWeaver 7.0 EHP 1 (ABAP) | 
| 1099841 | Add. info.: Upgrade to SAP NW 7.0 Support Rel. 3 ABAP | 
| 960783 | Add. info.: Upgrade to SAP NW 7.0 Support Rel. 2 ABAP | 
| 905029 | Add. info.: Upgrade to SAP NW 2004s Support Rel. 1 ABAP | 
| 818322 | Add. info.: Upgrade to SAP NW 2004s ABAP | 
| 692636 | SAPBWNews BW SP02 NW'04 Stack 02 RIN | 
| 647752 | SAPBWNews BW 3.0B Support Package 20 | 
| 601051 | SAPBWNews BW 3.1 Content Support Package 14 |