If you need to force a step to let users see what they've entered, prompt them to confirm, and re-edit the fields before they submit the form, then you can use a function called "Compute Mode". If you enable it in the form, you would be able to show formulas in the form before the records get submitted. So basically users would need to click "Review" first, see some formula or message and then they would be allowed to click "Confirm".

Also, if you would like to prevent users from being able to submit the form if their record is invalid, you can do so by using a feature called Disable Form.

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