Solution : https://service.sap.com/sap/support/notes/410929 (SAP Service marketplace login required)
Key words :
normal development>note 331646 describes, symptom conversion error, sending japanese texts, code page conversion, japanese user happen, return code rscpenoconv, utf-8ixml reason, shift-jis data, propietary microsoft characters, solution kernel patch
Related Notes :
| 331646 | Missing Japanese characters in UTF-8 |