Solution : https://service.sap.com/sap/support/notes/850732 (SAP Service marketplace login required)
Key words :
order/sequence/ operation/suboperation, system executes check routines, post goods receipt, enter confirmation number, solution program correction, error message ru 001, case backflush data, wrong check routine, user exit exit_saplbarm_001, check routine
Related Notes :
551225 | Data change in user exits partially ineffective |