Form submitted to the server, but failed server-side validation.
Please note - this property requires the Editor extension for DataTables.
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This event is the counter part to
submitSuccess. While that event will trigger if the request is successfully fulfilled, this event will trigger if the request was correctly processed, but it contained validation errors.
Please note the difference between the following three events that can happen at the end of a submit - only one of them will trigger for each submit action: