hi Venkat,
Yes this field in gi_sheet_row is of character type. Field value is fine when this FM is called but after exporting to excel it gives junk. I tried to debug the FM ,internally it calls MS_EXCEL_OLE_STANDARD_DAT and then GUI_DOWNLOAD , i checked the field value in the table that is going into GUI_DOWNLOAD is perfect. means gui_download is getting proper field value but excel is having junk.