Solution : https://service.sap.com/sap/support/notes/764272 (SAP Service marketplace login required)
Key words :
symptom special visualisations/conversions, conversions/visualisations made, special conversions/visualisations, sap list viewer, abap data dictionary, text data type, terms excel export, special conversion, data structure, excel format
Related Notes :
| 358644 | ALV Export Excel: Recommendations and known errors |