diff --git a/core/modules/content_moderation/src/Plugin/Action/ModerationStateChange.php b/core/modules/content_moderation/src/Plugin/Action/ModerationStateChange.php
index 9f87c9ebb1..50dc96395a 100644
--- a/core/modules/content_moderation/src/Plugin/Action/ModerationStateChange.php
+++ b/core/modules/content_moderation/src/Plugin/Action/ModerationStateChange.php
@@ -4,7 +4,6 @@
 
 use Drupal\content_moderation\ModerationInformationInterface;
 use Drupal\Core\Access\AccessResult;
-use Drupal\Core\Action\ActionBase;
 use Drupal\Core\Action\ConfigurableActionBase;
 use Drupal\Core\Entity\ContentEntityInterface;
 use Drupal\Core\Entity\DependencyTrait;
@@ -86,6 +85,7 @@ public function buildConfigurationForm(array $form, FormStateInterface $form_sta
 
     $form['configuration'] = [
       '#type' => 'container',
+      '#id' => 'edit-configuration',
     ];
 
     $form['configuration']['workflow'] = [
diff --git a/core/modules/content_moderation/tests/src/Functional/ActionConfigurationTest.php b/core/modules/content_moderation/tests/src/Functional/ActionConfigurationTest.php
new file mode 100644
index 0000000000..6427d8d1d4
--- /dev/null
+++ b/core/modules/content_moderation/tests/src/Functional/ActionConfigurationTest.php
@@ -0,0 +1,113 @@
+<?php
+
+namespace Drupal\Tests\content_moderation\Functional;
+
+use Drupal\Component\Utility\Crypt;
+use Drupal\system\Entity\Action;
+use Drupal\Tests\BrowserTestBase;
+use Drupal\Tests\node\Traits\ContentTypeCreationTrait;
+use Drupal\workflows\Entity\Workflow;
+
+/**
+ * Tests actions configuration by adding, editing, and deleting the action.
+ *
+ * @group content_moderation
+ */
+class ActionConfigurationTest extends BrowserTestBase {
+
+  use ContentTypeCreationTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = [
+    'action',
+    'node',
+    'content_moderation',
+  ];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+    $this->createContentType(['type' => 'page']);
+    $workflow = Workflow::load('editorial');
+    $workflow->getTypePlugin()->addEntityTypeAndBundle('node', 'page');
+    $workflow->save();
+  }
+
+  /**
+   * Tests configuration of action through administration interface.
+   */
+  public function testActionConfiguration() {
+    // Create a user with permission to view the actions administration pages.
+    $user = $this->drupalCreateUser(['administer actions']);
+    $this->drupalLogin($user);
+    $assert_session = $this->assertSession();
+
+    // Make a POST request to admin/config/system/actions.
+    $edit = [];
+    $edit['action'] = Crypt::hashBase64('moderation_state_change:node');
+    $this->drupalPostForm('admin/config/system/actions', $edit, t('Create'));
+    $assert_session->statusCodeEquals(200);
+
+    // Make a POST request to the individual action configuration page.
+    $edit = [];
+    $action_label = $this->randomMachineName();
+    $edit['label'] = $action_label;
+    $edit['id'] = strtolower($action_label);
+    $edit['workflow'] = 'editorial';
+    $edit['state'] = 'draft';
+    $this->drupalPostForm('admin/config/system/actions/add/' . Crypt::hashBase64('moderation_state_change:node'), $edit, t('Save'));
+    $assert_session->statusCodeEquals(200);
+
+    $action_id = $edit['id'];
+
+    // Make sure that the new complex action was saved properly.
+    $assert_session->pageTextContains(t('The action has been successfully saved.'));
+    $assert_session->pageTextContains($action_label);
+
+    // Make another POST request to the action edit page.
+    $this->clickLink(t('Configure'));
+    $assert_session->statusCodeEquals(200);
+    $assert_session->fieldValueEquals('workflow', 'editorial');
+    $assert_session->fieldValueEquals('state', 'draft');
+
+    $edit = [];
+    $new_action_label = $this->randomMachineName();
+    $edit['label'] = $new_action_label;
+    $edit['workflow'] = 'editorial';
+    $edit['state'] = 'published';
+    $this->drupalPostForm(NULL, $edit, t('Save'));
+    $assert_session->statusCodeEquals(200);
+
+    // Make sure that the action updated properly.
+    $assert_session->pageTextContains(t('The action has been successfully saved.'));
+    $assert_session->pageTextNotContains($action_label);
+    $assert_session->pageTextContains($new_action_label);
+
+    $this->clickLink(t('Configure'));
+    $assert_session->statusCodeEquals(200);
+    $assert_session->fieldValueEquals('workflow', 'editorial');
+    $assert_session->fieldValueEquals('state', 'published');
+
+    // Make sure that deletions work properly.
+    $this->drupalGet('admin/config/system/actions');
+    $this->clickLink(t('Delete'));
+    $assert_session->statusCodeEquals(200);
+    $edit = [];
+    $this->drupalPostForm(NULL, $edit, t('Delete'));
+    $assert_session->statusCodeEquals(200);
+
+    // Make sure that the action was actually deleted.
+    $assert_session->responseContains(t('The action %action has been deleted.', ['%action' => $new_action_label]));
+    $this->drupalGet('admin/config/system/actions');
+    $assert_session->statusCodeEquals(200);
+    $assert_session->pageTextNotContains($new_action_label);
+
+    $action = Action::load($action_id);
+    $this->assertFalse($action, 'Make sure the action is gone after being deleted.');
+  }
+
+}
diff --git a/core/modules/content_moderation/tests/src/FunctionalJavascript/ActionConfigurationTest.php b/core/modules/content_moderation/tests/src/FunctionalJavascript/ActionConfigurationTest.php
new file mode 100644
index 0000000000..0d7bf900ea
--- /dev/null
+++ b/core/modules/content_moderation/tests/src/FunctionalJavascript/ActionConfigurationTest.php
@@ -0,0 +1,87 @@
+<?php
+
+namespace Drupal\Tests\content_moderation\FunctionalJavascript;
+
+use Drupal\Component\Utility\Crypt;
+use Drupal\FunctionalJavascriptTests\JavascriptTestBase;
+use Drupal\Tests\node\Traits\ContentTypeCreationTrait;
+use Drupal\workflows\Entity\Workflow;
+
+/**
+ * Tests AJAX on actions configuration form.
+ *
+ * @group content_moderation
+ */
+class ActionConfigurationTest extends JavascriptTestBase {
+
+  use ContentTypeCreationTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = [
+    'action',
+    'node',
+    'content_moderation',
+  ];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+    $this->createContentType(['type' => 'page']);
+    $this->createContentType(['type' => 'article']);
+    $workflow = Workflow::load('editorial');
+    $workflow->getTypePlugin()->addEntityTypeAndBundle('node', 'page');
+    $workflow->save();
+    $workflow = Workflow::create([
+      'id' => 'moderation',
+      'label' => 'Moderation',
+      'type' => 'content_moderation',
+    ]);
+    $workflow->getTypePlugin()
+      ->addState('moderated', 'Moderated')
+      ->addEntityTypeAndBundle('node', 'article');
+    $workflow->save();
+  }
+
+  /**
+   * Tests configuration of action through administration interface.
+   */
+  public function testActionConfigurationXYZ() {
+    // Create a user with permission to view the actions administration pages.
+    $user = $this->drupalCreateUser(['administer actions']);
+    $this->drupalLogin($user);
+    $assert_session = $this->assertSession();
+
+    // Make a POST request to admin/config/system/actions.
+    $edit = [];
+    $edit['action'] = Crypt::hashBase64('moderation_state_change:node');
+    $this->drupalPostForm('admin/config/system/actions', $edit, t('Create'));
+    $assert_session->statusCodeEquals(200);
+    $workflow_select = $assert_session->selectExists('workflow');
+    $this->assertNotNull($workflow_select->find('named', ['option', 'editorial']));
+    $this->assertNotNull($workflow_select->find('named', ['option', 'moderation']));
+
+    $state_select = $assert_session->selectExists('state');
+    $this->assertNotNull($state_select->find('named', ['option', 'archived']));
+    $this->assertNotNull($state_select->find('named', ['option', 'draft']));
+    $this->assertNotNull($state_select->find('named', ['option', 'published']));
+    // Trigger the AJAX.
+    $workflow_select->selectOption('moderation');
+    $assert_session->assertWaitOnAjaxRequest();
+    $state_select = $assert_session->selectExists('state');
+    $this->assertNotNull($state_select->find('named', ['option', 'draft']));
+    $this->assertNotNull($state_select->find('named', ['option', 'moderated']));
+    $this->assertNotNull($state_select->find('named', ['option', 'published']));
+    // Trigger the AJAX.
+    $workflow_select->selectOption('editorial');
+    $assert_session->assertWaitOnAjaxRequest();
+    $state_select = $assert_session->selectExists('state');
+    $this->assertNotNull($state_select->find('named', ['option', 'archived']));
+    $this->assertNotNull($state_select->find('named', ['option', 'draft']));
+    $this->assertNotNull($state_select->find('named', ['option', 'published']));
+  }
+
+}
diff --git a/core/modules/content_moderation/tests/src/Kernel/ActionConfigSchemaTest.php b/core/modules/content_moderation/tests/src/Kernel/ActionConfigSchemaTest.php
new file mode 100644
index 0000000000..8263458214
--- /dev/null
+++ b/core/modules/content_moderation/tests/src/Kernel/ActionConfigSchemaTest.php
@@ -0,0 +1,91 @@
+<?php
+
+namespace Drupal\Tests\content_moderation\Kernel;
+
+use Drupal\node\Entity\NodeType;
+use Drupal\system\Entity\Action;
+use Drupal\Tests\SchemaCheckTestTrait;
+use Drupal\KernelTests\KernelTestBase;
+use Drupal\workflows\Entity\Workflow;
+
+/**
+ * Ensures the change state action has valid config schema.
+ *
+ * @group content_moderation
+ */
+class ActionConfigSchemaTest extends KernelTestBase {
+
+  use SchemaCheckTestTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = [
+    'content_moderation',
+    'node',
+    'user',
+    'system',
+    'workflows',
+  ];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+    $this->installEntitySchema('node');
+    $this->installSchema('node', 'node_access');
+    $this->installEntitySchema('content_moderation_state');
+    $this->installConfig('content_moderation');
+
+    $node_type = NodeType::create([
+      'type' => 'page',
+      'label' => 'Page',
+    ]);
+    $node_type->save();
+    $workflow = Workflow::load('editorial');
+    $workflow->getTypePlugin()->addEntityTypeAndBundle('node', 'page');
+    $workflow->save();
+
+    $action = Action::create([
+      'id' => 'change_moderation_state_to_draft',
+      'type' => 'node',
+      'label' => t('Change moderation state to Draft'),
+      'configuration' => [
+        'workflow' => 'editorial',
+        'state' => 'draft',
+      ],
+      'plugin' => 'moderation_state_change:node',
+    ]);
+    $action->trustData()->save();
+
+    $action = Action::create([
+      'id' => 'change_moderation_state_to_published',
+      'type' => 'node',
+      'label' => t('Change moderation state to Published'),
+      'configuration' => [
+        'workflow' => 'editorial',
+        'state' => 'published',
+      ],
+      'plugin' => 'moderation_state_change:node',
+    ]);
+    $action->trustData()->save();
+  }
+
+  /**
+   * Tests whether the change_moderation_state action config schema is valid.
+   */
+  public function testValidActionConfigSchema() {
+
+    // Test change_moderation_state_to_draft configuration.
+    $config = $this->config('system.action.change_moderation_state_to_draft');
+    $this->assertEquals($config->get('id'), 'change_moderation_state_to_draft');
+    $this->assertConfigSchema(\Drupal::service('config.typed'), $config->getName(), $config->get());
+
+    // Test change_moderation_state_to_published configuration.
+    $config = $this->config('system.action.change_moderation_state_to_published');
+    $this->assertEquals($config->get('id'), 'change_moderation_state_to_published');
+    $this->assertConfigSchema(\Drupal::service('config.typed'), $config->getName(), $config->get());
+  }
+
+}