Solution : https://service.sap.com/sap/support/notes/368622 (SAP Service marketplace login required)
Key words : 
additional key words trguid, attached source code corrections, initial transaction guid, persistent delta records, apo backorder processing, apo system, program error, solution implement, prerequisites
Related Notes : 
       
| 375193 | Backorder processing: Composite SAP note on posting | 
| 367335 | Delta records during transfer of the BOP results | 
| 365458 | No update of changed orders in APO |