Solution : https://service.sap.com/sap/support/notes/502681 (SAP Service marketplace login required)
Key words : 
ean/upc delivers incorrect values, enter sales order items, solution implement notes 504493, incorrect entry, ups numbers, information message, corrected anymore, material/grid, automatic determination, j_3aean11 reason
Related Notes : 
       
| 504493 | Message V1348 for material change in sales order | 
| 498583 | Problems with the customer material number in the order |