Solution : https://service.sap.com/sap/support/notes/934187 (SAP Service marketplace login required)
Key words : 
call transaction mb03 - material document display, solution implement correction instructions, transactions mb03/mb02, posted project stock, message bs007 appears, prerequisites implement note 677273, transaction mb02, material document, display/change, terms mb03
Related Notes : 
       
| 677273 | MBxx: Valuation indicator of special stock |