Solution : https://service.sap.com/sap/support/notes/797108 (SAP Service marketplace login required)
Key words : 
sap certified anti-virus security solution, integrate external certified virus scan solutions, virus scan interface productively, virus scan interface reason, interface 'virus-scan-interface', virus scan interface, virus scan server, virus scan provider, external scan product, integrate nw-vsi
Related Notes : 
       
| 1522258 | |
| 1155653 | |
| 1058033 | |
| 1058032 | |
| 1058031 | |
| 1056884 | |
| 996008 | Virus check during data archiving | 
| 817623 | Frequent questions about VSI in SAP applications | 
| 807989 | |
| 803637 | Virus check added to gui_upload | 
| 786179 | Data security products: Application in the antivirus area | 
| 782963 | |
| 639486 | Anti-virus protection within SAP applications (BC-SEC-VIR) |