Review of error handling of form submission

Hi, I have this scenario.
From Webflow I send a form submission with a custom webhook to Hubspot. And I want monitor errors and upgrade error handling.

When there is a validation error I have a webhook 400 error handler which updates the user on the website and then It sends a message to me via a slack channel. Then I’ve added a json with an empty string that forces an error so the scenario is marked as an error in the history list.

Does this make any sense? I have a feeling there is more robust way of handling errors. Since the error can be a validation error but also a timeout error. Is there a best practise for a case like this?