Solution : https://service.sap.com/sap/support/notes/82478 (SAP Service marketplace login required)
Summary : 
      
Key words : 
sap os/db migration check, project plan check ensures, sap support line support, heterogeneous system copy reason, support copying complete systems, os/db migration, os/db migrations, sap migration check, migrate production systems, client transport tool
Related Notes : 
       
| 1367451 | Oracle 10g: Transportable Database | 
| 1035051 | Transportable tablespaces | 
| 1003028 | Enhanced support for database copy in BR*Tools | 
| 784931 | Hom./Het.System Copy SAP Web AS 6.40 SR1 ABAP | 
| 547314 | FAQ: System Copy procedure | 
| 369426 | |
| 333097 | INST: 4.6C / 4.6C SR R/3 on UNIX/Oracle - Het. System Copy | 
| 321356 | INST: 3.1I SR1 SAP R/3 - Heterogeneous System Copy | 
| 317096 | Migration Key Generation for ABAP Systems | 
| 316353 | INST: 4.6D SAP Basis - Heterogeneous System Copy | 
| 179150 | INST: 4.6B R/3 Inst. - Heterogeneous System Copy | 
| 143059 | INST: 4.5B R/3 Inst. - Heterogeneous System Copy | 
| 107591 | INFORMIX: migration standalone R/3 system to MSCS | 
| 107534 | Migration on Microsoft cluster server | 
| 101216 | INST: 3.1I R/3 Inst. - Heterogeneous System Copy | 
| 89188 | R/3 System copy | 
| 89130 | Label of migration CD | 
| 86860 | INST: 4.0A/B R/3 Inst. - Heterogeneous System Copy |