Solution : https://service.sap.com/sap/support/notes/645100 (SAP Service marketplace login required)
Key words : 
attached source code corrections, select function module frml374_modeling_buffer, substances tab page, materials tab page, terms explosion reason, start transaction se37, import tab page, frmle_flag            indicator optional, select alternatives, recipe workbench
Related Notes : 
       
| 631420 | RMGMT210: Corrections in Support Package 04 |