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I think what you'll probably want to do is to implement a custom IO descriptor for your use-case; you can subclass the JSON descriptor and probably reuse most of its code.

Thanks @sauyon. But I’m unclear of the purpose of this. Would the purpose be to catch all the validation errors and pass them along but to not stop the api function from running?

Yep, we don't have support for that usecase with the default JSON descriptor as far as I know.