Solution : https://service.sap.com/sap/support/notes/103585 (SAP Service marketplace login required)
Key words : 
additional key words hot packages sapkh40a01, abap program editor choosing 'utilities -> upload', phase 'abap/dynp generation', ~/general/r3server/abap/note, execute program rgugbr18, sap patch manager, respective application area, choose 'single test', start transaction se37, import parameter 'mm'
Related Notes : 
       
| 130398 | Activation error in Hot Packages for Release 4.0B | 
| 104128 | @3B@Documentation LCP Collections to 4.0B | 
| 104127 | @3B@Documentation Hot Package Collections to 4.0B | 
| 99834 | Additions to upgrade from Rel. 2.2x to 4.0B | 
| 97630 | OCS: Familiar problems with patches 3.1H-4.0B | 
| 91709 | Addition upgrade to 4.0B | 
| 91692 | Additional Info: Upgrading to 4.0A |