Solution : https://service.sap.com/sap/support/notes/391974 (SAP Service marketplace login required)
Key words : 
additional key words bom_flag, attached source code corrections, read master data, lower-level order, production collective order, process collective order, collective order, production order, process order, planned order
Related Notes : 
       
| 391678 | No homogeneity list after conversion of planned order |