Add records to table T180a

Godd morning
I'm not able di add records at table T180a.
I'm not do "append t180a".
tables: T180A.
DATA:lw_file  type string.                        " File Path
DATA:  BEGIN OF t_itab OCCURS 0.
INCLUDE STRUCTURE T180A.
data: end of t_itab .
lw_file = 'X:\Dokumente und Einstellungen\users\Desktop\t180a.TXT'.
CALL FUNCTION 'GUI_UPLOAD'
    EXPORTING
      filename                                      = lw_file
      FILETYPE                                   = 'ASC'
      HAS_FIELD_SEPARATOR           = 'X'
    tables
      data_tab                                      = t_itab
loop at t_itab.
move-corresponding t_itab to T180a.
endloop.
leave program.

Do you have any idea what you are trying to do here? Looking at your code, I don't think you do since it's really bad!!! Sorry, but there is no other way to put this.
What gave you the idea that table T180a would be updated using MOVE-CORRESPONDING??

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    be appreciated
    Charlie Soroka

    Charlie
    Try to abandon your old style (Cobol) style code. We are not anymore living in those days and programming is evaluated. 
    This means that we declare no identifiers globally (in top of the program) if there is no need for it. The advantage, it becomes easier to see if the right ones are used.
    Secondly avoid ostrich code like this. It only hides the errors and even has the change that at a certain moment everything is wound up and shows an unpredictable error on a whatever moment.
    Catch ex As Exception
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    End Try
    Also know that an update of an adapter does a whole table, no rows (and try to avoid names which are misleading for others, command is another class) 
    There is a change there are concurrency errors and then those will not be done, but you have hided that likewise I already wrote.
    Success
    Cor

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