PRE COMMIT trigger event that can be used in Sales Orders Form Personalization

I need a PRE COMMIT trigger event that is fired when SAVE button is pressed and that will not allow saving the NEW order line, if the validation from Form Personalization is not passed.

So far, I tried KEY-COMMIT and OM_PRE_COMMIT trigger events, but in both cases the validation is not checked as the error message is not displayed, so I'm afraid these trigger events are not being fired when SAVE button is pressed.

For new orders I used OM_PRE_BOOK_EVENT trigger, which is fired when pressing Book Order button, so I need a similar event trigger that will be fired when I press the Save button.