Solution : https://service.sap.com/sap/support/notes/1069704 (SAP Service marketplace login required)
Key words : 
outbound delivery order, support mixed situations, terms /scwm/erp_interface, /scwm/cl_dlv_msl_fill_prd_outb, assertion occurs, goods issue, assert condition, violated reason, solution implement, program change
Related Notes : 
       
| 997412 | Correctly use delivery status for partial goods receipt |