Solution : https://service.sap.com/sap/support/notes/519572 (SAP Service marketplace login required)
Key words :
basis support package level, 10 support package level <= 19release 6, support package level 19-, support package level 3, 20 support package level 2, 20 support package level <= 3, older table modifications, support package, prerequisites systems-, 0 sr1the process
Related Notes :
| 484876 | Additional information about upgrading to SAP Web AS 6.20 |
| 401717 | Additional info on upgrading to SAP Web AS 6.10 (Basis) |