16 methods override PluginFormInterface::validateConfigurationForm()

ConditionPluginBase::validateConfigurationForm in core/lib/Drupal/Core/Condition/ConditionPluginBase.php
ConfigurableActionBase::validateConfigurationForm in core/lib/Drupal/Core/Action/ConfigurableActionBase.php
ConfigurableSearchPluginBase::validateConfigurationForm in core/modules/search/src/Plugin/ConfigurableSearchPluginBase.php
EditorBase::validateConfigurationForm in core/modules/editor/src/Plugin/EditorBase.php
ImageToolkitBase::validateConfigurationForm in core/lib/Drupal/Core/ImageToolkit/ImageToolkitBase.php
LayoutDefault::validateConfigurationForm in core/lib/Drupal/Core/Layout/LayoutDefault.php
MediaSourceBase::validateConfigurationForm in core/modules/media/src/MediaSourceBase.php
MenuLinkDefaultForm::validateConfigurationForm in core/lib/Drupal/Core/Menu/Form/MenuLinkDefaultForm.php
PluginFormBase::validateConfigurationForm in core/lib/Drupal/Core/Plugin/PluginFormBase.php
SelectionPluginBase::validateConfigurationForm in core/lib/Drupal/Core/Entity/EntityReferenceSelection/SelectionPluginBase.php
TestClass::validateConfigurationForm in core/tests/Drupal/Tests/Core/Plugin/PluginWithFormsTraitTest.php
TestPluginForm::validateConfigurationForm in core/tests/Drupal/Tests/Core/Plugin/DefaultPluginManagerTest.php
VariantBase::validateConfigurationForm in core/lib/Drupal/Core/Display/VariantBase.php
WorkflowTypeConfigureFormBase::validateConfigurationForm in core/modules/workflows/src/Plugin/WorkflowTypeConfigureFormBase.php
WorkflowTypeStateFormBase::validateConfigurationForm in core/modules/workflows/src/Plugin/WorkflowTypeStateFormBase.php
WorkflowTypeTransitionFormBase::validateConfigurationForm in core/modules/workflows/src/Plugin/WorkflowTypeTransitionFormBase.php

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.