Solution : https://service.sap.com/sap/support/notes/205545 (SAP Service marketplace login required)
Key words : 
flg_sel_ignoreimport parameter  reference field/structure  default  optionalflg_sel_ignore    rc27x-flg_sel              space    xenhance, techs_copy_expexport parameter  reference field/structuretechs_copy_exp    afpo-techs_copysee, additional key words transaction co01, function module co_bi_afpo_read_with_key, parameter effectivity, import parameter, export parameter, phantom assembly, component overview, order maintenance
Related Notes : 
       
| 551200 | Update termination after inserting phantom assembly | 
| 388653 | Follow-up note on Note 366535 | 
| 366535 | Missing homogeneity list when extending subnetwork |