Hi,
You may use the FM: Read_text for fetching the text. You can use the FM using the text id: LTXT, Language: EN, Object: MDTXT and name as your material code (in 18 digit length) and plant as shown below:
Foe the "Name" field format, you may check the table STXH with object name MDTXT and ID: LTXT.
Regards,
AKPT