Solution : https://service.sap.com/sap/support/notes/545852 (SAP Service marketplace login required)
Key words :
Upgrade to BW 3.0B
Related Notes :
| 550941 | Upgrade 3.1 -> Basis 6.20 termination in DIFFEXP* |
| 510835 | Additional information on upgrading to BW 3.0B |
| 484876 | Additional information about upgrading to SAP Web AS 6.20 |
| 19466 | Downloading SAP kernel patches |