Solution : https://service.sap.com/sap/support/notes/806219 (SAP Service marketplace login required)
Key words : 
production orderindividual batch valuation, individual batch valuation, system incorrectly copies, source code correction, valuation type reason, order header material, valuation type, correction instructions, order header, header item
Related Notes : 
       
| 805282 | Individual batch valuation: Valuation type in the order | 
| 440857 | Problems with batches for order items |