Hi Hassim, you can use as below:
LS_HEADDATA-MATERIAL = 'matnr'.
LS_HEADDATA-BASIC_VIEW = 'X'.
LS_MATDESC-LANGU = 'spras'.
LS_MATDESC-MATL_DESC = 'maktx'.
APPEND LS_MATDESC TO LT_MATDESC.
CALL FUNCTION 'BAPI_MATERIAL_SAVEDATA'
EXPORTING
HEADDATA = LS_HEADDATA
IMPORTING
RETURN = LS_RETURN
TABLES
MATERIALDESCRIPTION = LT_MATDESC
RETURNMESSAGES = LT_RETURNMESSAGES.
CALL FUNCTION 'BAPI_TRANSACTION_COMMIT'.
Regards,
Felipe