Solution : https://service.sap.com/sap/support/notes/300645 (SAP Service marketplace login required)
Key words :
additional key words ws_upload, supported file formats result, additional supported formats area, certified java applets, choose 'deactivate java', retain complete control, 'java' -> 'java settings', function module 'gui_is_its', normal functions begin, function modules requires
Related Notes :
| 444826 | PM notification - protected long text is changeable |
| 358661 | New data type when downloading in ITS |
| 354464 | Problems with saphttp and sapftp on the frontend |
| 314568 | SAP GUI for HTML functionality / Limitations / Sp. Behaviour |