Solution : https://service.sap.com/sap/support/notes/361901 (SAP Service marketplace login required)
Key words :
menu function insert - text - standard, -mentioned message td 757 appears, avoid error message td757, additional key words sapscript, message td757 'unknown format, sapscript style concept, include unformatted text, option 'expand immediately', paragraph / character formats, include text
Related Notes :
| 372606 | ME21N: Text formatting |