Solution : https://service.sap.com/sap/support/notes/771333 (SAP Service marketplace login required)
Key words :
activated bythe application explicitly, press pushbutton 'insert method', gui default character set, press pushbutton 'parameters', press pushbutton 'exceptions', ensure backward compatibility, run transaction se24, prerequisites html document, html page properly, manual activity required
Related Notes :
1321126 | SE11: Corrupt umlauts in dialog box for string-based domain |
1319517 | Unicode Collection Note |
896268 | Display problems with the PI sheet |
792110 | SAPoffice: Characters displayed incorrectly in documents |