Solution : https://service.sap.com/sap/support/notes/565684 (SAP Service marketplace login required)
Key words : 
0b            import support package 28, 1c            import support package 20, 0b            import support package 7, terms sm37-logs, 0b support package 28, 1c support package 20, 0b support package 07, bw system release, bw support packages, provide advance information
Related Notes : 
       
| 523186 | SAPBWNews BW 2.1C Support Package 20 | 
| 523185 | SAPBWNews BW 2.0B Support Package 28 | 
| 517950 | SAPBWNews BW 3.0B Support Package 07 |