I want to stay on the same screen when I close the error message

[RabiaNurSarikaya]

Hello, I want to get error message in Abap but after closing the error message I want to stay in the same program. When I run this code and give the value as in the condition, it gives an error message, but when I press exit, the program exits and comes to the handle screen. The transaction flow needs to stop, so I have to give an error message. Can you help me, please?

  DATA : lv_iadefat TYPE zfid_iadtut.

  CLEAR : lv_iadefat.

  IF sy-ucomm EQ 'SAVE' .

    LOOP AT lt_iade INTO DATA(ls_iade).

      lv_iadefat = ls_iade-iadtut + lv_iadefat .

    ENDLOOP.

  ENDIF.

  IF lv_iadefat > gl_tem-mektut.

MESSAGE 'The refund amount cannot be greater than the Letter of Guarantee amount.!' TYPE 'E'.

    SET SCREEN sy-dynnr.

    LEAVE TO SCREEN sy-dynnr.

  ELSE.

    gl_tem-kalan = gl_tem-mektut - gl_tem-iadtut.

  ENDIF.

[Sandra_Rossi]

Add a breakpoint and you'll see that SET SCREEN isn't reached: MESSAGE TYPE 'E' may completely close the program depending at which place it runs. See here: https://help.sap.com/doc/abapdocu_latest_index_htm/latest/en-US/index.htm?file=abenabap_messages_typ...

[RabiaNurSarikaya]

@Sandra_Rossi In this case, how should I write the code or what should I add? I deleted the set screen but I still get to the sap main screen.

[Sandra_Rossi]

Of course, removing SET SCREEN is useless, because, as I said, SET SCREEN isn't reached. The problem is due to MESSAGE TYPE 'E'. I have given the link to the documentation. It seems that you don't understand the documentation of the statement MESSAGE.