Solution : https://service.sap.com/sap/support/notes/638551 (SAP Service marketplace login required)
Key words : 
deactivating bdoc messages prevents, /3 system back end, /3 back-end system, attached correction instructions, relevant support package, prevent bdoc messages, crm application responsible, bdoc messages, bdoc types, crm server
Related Notes : 
       
| 705953 | CRM Standalone: Deactivate messaging flow for BUS_TRANS_MSG | 
| 675725 | Unnecessary BDocs in SRM (EBP) from queue CSA_MASS_BUPA | 
| 650624 | Suppressing BDoc generation in CRM Server | 
| 635697 | Activating/deactivating creation of BDoc messages | 
| 623195 | Flow-specific entries in the SMOFPARSFA table | 
| 574224 | Reorganizatn of BDoc type messages according to change date | 
| 566765 | Deletion: Reducing read accesses to SRRELROLES | 
| 206439 | Reorganization of tables in CRM Middleware |