Solution : https://service.sap.com/sap/support/notes/1467481 (SAP Service marketplace login required)
Key words :
codepage attributes inthe function modules, implement attached program corrections, function module gui_upload, import relevant supportpackageafter, ucp user parameter, system code page, consist japanese character, text input file, file system, special character
Related Notes :
| 758870 | Account statement: Character set when the file is uploaded |