Solution : https://service.sap.com/sap/support/notes/1646888 (SAP Service marketplace login required)
Key words :
attached source code corrections, extensive code page change, phase main_postp/run_rsumod10, function module rs_cua_version_export, terms menu painter, code page attributes, current code page, target code page, unicode code page, incompatibility occurs rarely
Related Notes :
| 844988 | CONNE_IMPORT_CONVERSION_ERROR in import |
| 562988 | IMPORT: Conversion error despite IGN CONV ERRORS |
| 530576 | 6.20 kernel patch level <173: IMPORT FROM DATABASE critical |
| 144057 | abap/import_char_conversion : How to set best |