Solution : https://service.sap.com/sap/support/notes/150214 (SAP Service marketplace login required)
Key words : 
current setting additional key words orders, customizing transaction omsl setting 'lexicographical', numeric material number106091 edi orders, numeric matnr solution implement, edi incoming orders, function module idoc_input_orders, 118926 edi orders, material number, material number 3, incorrect accesses
Related Notes : 
       
| 451465 | SD EDI ORDERS : Message BMG 140 Problems with materialnumber | 
| 189025 | EDI DELORD:Termin.BMG136 with mat.no.with template | 
| 182555 | IDoc can't be proc.in foreground s.mat.no.too long | 
| 182545 | IDoc can't be proc. in foregr. sc. mat.no. too long |