Solution : https://service.sap.com/sap/support/notes/925175 (SAP Service marketplace login required)
Key words :
underlying bdoc types, asynchronous rfc step, attached correction instructions, called crm_<bdoctyp>, status i04 reason, write csa queues, seperate csa queue, status i04, i04 status, csa queues
Related Notes :
| 529764 | Using inbound queues for CSA queues |