Solution : https://service.sap.com/sap/support/notes/536541 (SAP Service marketplace login required)
Key words : 
implement source code corrections, prerequisites data inconsistency, bop error log, symptom short dump, short dump, /sapapo/bop, bop processing, scheduling failure, /sapapo/bop_result, scheduling_failure reason
Related Notes : 
       
| 375193 | Backorder processing: Composite SAP note on posting |