REUSE_ALV_GRID_DISPLAY standard data validation routine

I am using REUSE_ALV_GRID_DISPLAY to display data from a custom table and allowing users to edit some fields. When the save button is clicked SAP automatically validates some data fields (for example MATNR) and alerts the user if there is an error. This is great!! But I need to execute some custom code when the user clicks the SAVE button. If SAP has detected an error and is going to pop up the Error Log screen for the user, I do not want to execute my custom code.
Does anyone know how to determine if SAP has detected problems with the data so I can skip my code and let the normal process flow continue?
I thought about trying to check if the all field values were valid using my own coding, but when I use the method CHECK_CHANGED_DATA only valid field values are transfered to my internal table. So invalid fields AND fields that the user did not enter values into are all coming back as blank.
Here is a small portion of my code.
FORM user_command USING    r_ucomm LIKE sy-ucomm
                  rs_selfield TYPE slis_selfield.
DATA ref1 TYPE REF TO cl_gui_alv_grid.
CALL FUNCTION 'GET_GLOBALS_FROM_SLVC_FULLSCR'
    IMPORTING
      e_grid = ref1.
CALL METHOD ref1->check_changed_data .
CASE r_ucomm.
     WHEN 'SAVE'.
          "Do some custom coding here if SAP did not detect any errors with data validation
ENDCASE.
Thanks for your help,
David

Hi,
In your user_command form
    call function 'REUSE_ALV_GRID_DISPLAY'
      exporting
        it_fieldcat                 = i_fieldcat[]
        is_layout                   = pt_grplayout2
        i_callback_program          = 'YATTU0007'
        i_callback_html_top_of_page = p_header
        i_callback_user_command     = 'USER_COMMAND'
        it_events                   = i_events[]
      tables
        t_outtab                    = i_yatthdr.
In user_command form
* Form user_command                                                   *
* This form will handle the user command from fm REUSE                 *
form user_command using p_ucomm type sy-ucomm
                     rs_selfield type slis_selfield.
data p_ref1 type ref to cl_gui_alv_grid.
call function 'GET_GLOBALS_FROM_SLVC_FULLSCR'
    importing
      e_grid = p_ref1.
call method p_ref1->check_changed_data.
case p_ucomm.
    when '&DATA_SAVE'.
   " WRITE YOUR CODE FOR SAVE
endcase.
rs_selfield-refresh = c_x.             " Grid refresh
endform.                                 " User_command
a®

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Hi Experts,
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Thanks
Edited by: Sap Fan on Sep 29, 2009 8:51 AM
Edited by: Sap Fan on Sep 29, 2009 9:46 AM

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Hi,
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REUSE_ALV_GRID_DISPLAY standard data validation routine

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