.. index:: single: Forms; Disabling validation How to Disable the Validation of Submitted Data =============================================== Sometimes it is useful to suppress the validation of a form altogether. For these cases you can set the ``validation_groups`` option to ``false``:: use Symfony\Component\OptionsResolver\OptionsResolver; public function configureOptions(OptionsResolver $resolver) { $resolver->setDefaults([ 'validation_groups' => false, ]); } Note that when you do that, the form will still run basic integrity checks, for example whether an uploaded file was too large or whether non-existing fields were submitted. The submission of extra form fields can be controlled with the :ref:`allow_extra_fields config option ` and the maximum upload file size should be handled via your PHP and web server configuration.