Where to validate ALV entries

We have an editable ALV grid. Where is the right place to call our validations from?
Following validation, we also want to (programattically) update some cells in our grid.
Where is the right place to place the updates?
Thanks

Hi,
You will have many options to validate the ALV entries, based on your requirement you need decide.
Let us assume if you want to validate on each cell ->then once user enter some value on cell ask them to enter, you need to validate these cell values on_enter event on alv functionality.
If user want to validate once enter all the cells...then you need to provide some button or use the standard button CHECK on ALV application tool bar..under the Action button youneed to validate.
Let me know if you need more clarfications on this.
Regards,
Naresh.

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Validate ALV entry

Hello.
I'm using an ALV display with a custom field catalog to allow a user to edit data via the ALV display (certain fields).
I create my container and fieldcatalog in the PAI of my screen and use CALL METHOD grid1->refresh_table_display to display it, I can edit the contents of the table displayed in the ALV just fine. Now I want to validate the edits as they happen and pop a message and disallow the edit by a rule/validation I define. Can someone show me how/where/what to insert a validation routine into this?
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Handle the data_changed event in the grid.
Whenever you make changes in the data in ALV Grid this event would be triggered. Here you can perform additional validations that you may need to perform.
code METHODS handle_data_changed
FOR EVENT data_changed OF cl_gui_alv_grid
IMPORTING er_data_changed.[/code]
Implementation:
code METHOD handle_data_changed.
PERFORM validations USING er_data_changed.
ENDMETHOD.[/code]
codeFORM validations USING er_data_changed TYPE REF TO cl_alv_changed_data_protocol.
DATA: ls_good TYPE lvc_s_modi.
DATA wa LIKE LINE OF lt_good_cells.
CALL METHOD g_grid->register_edit_event
EXPORTING
i_event_id = cl_gui_alv_grid=>mc_evt_modified.
LOOP AT er_data_changed->mt_good_cells INTO ls_good.
CASE ls_good-fieldname.
WHEN 'FIELDNAME'. "Your fieldname
CALL METHOD er_data_changed->get_cell_value "Get the changed value
EXPORTING
i_row_id = ls_good-row_id
i_fieldname = ls_good-fieldname
IMPORTING
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"Make your validations here.
ENDCASE.
[/code]

Reset ALV entry in display

Hello.
I'm using an ALV display with a custom field catalog to allow a user to edit data via the ALV display (certain fields).
I create my container and fieldcatalog in the PAI of my screen and use CALL METHOD grid1->refresh_table_display to display it, I can edit the contents of the table displayed in the ALV just fine. I can validate each entry the user makes using the register_edit_event and use CALL METHOD er_data_changed->get_cell_value to get the user data as they enter and I can then validate the entry against my custom rules. My issue is that if the user violates the rules I defined in my code I would like to reset the entry. What method can I use to do this. My code for validation is below.
CLASS lcl_event_receiver IMPLEMENTATION.
METHOD handle_data_changed.
    DATA: ls_good TYPE lvc_s_modi.
DATA wa LIKE LINE OF lt_good_cells.
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            EXPORTING
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                    i_fieldname = 'MATNR'
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                    i_fieldname = ls_good-fieldname
              IMPORTING
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*---> I validate here and if I find an issue I would like to reset or change the cell value.
      ENDCASE.
    ENDLOOP.
ENDMETHOD.
Thanks!!

I have located the answer.
When I do my validation routine if my error criteria has been reached I through a flag and then execute the method "modify_cell" to reset it to whatever value I choose.
            CALL METHOD er_data_changed->modify_cell
                EXPORTING
                      i_row_id = ls_good-row_id
                      i_fieldname = <my fieldname>
                      i_value = <value to reset field to>.

How to validate table entries for that table

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hi,
create foreign key relation ships
do the following way
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create a foreign key relations with that table
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Press the Copy button. You are returned to the Dictionary: Table/Structure: Change Fields screen and the message "Foreign key was transferred" appears in the status bar. The Status fields contain the values Revised and Not saved.
Press the Activate button on the Application toolbar. The message "was activated" appears in the status bar. The values in the Status fields are now Act. and Saved.
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Where to validate ALV entries

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