Solution : https://service.sap.com/sap/support/notes/440897 (SAP Service marketplace login required)
Key words :
type specification reference type optional ext_texttypes, additional key words me21n, enter function module mmpur_text_imp_subscreen, attached correction instructions, descriptive text editor, function module, sapscript editor, text tabpage, symptom me22n, header texts
Related Notes :
| 398253 | ME21N/51N: Field selection of texts not considered |