balticrest/vendor/symfony/form/Resources/config/validation.xml

<?xml version="1.0" ?>

<constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping https://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">

  <class name="Symfony\Component\Form\Form">
    <constraint name="Symfony\Component\Form\Extension\Validator\Constraints\Form" />
    <constraint name="Symfony\Component\Validator\Constraints\Traverse">
      <option name="traverse">false</option>
    </constraint>
  </class>
</constraint-mapping>