diff --git a/src/Integrations/WordPress/Content/ContentCreateAbility.php b/src/Integrations/WordPress/Content/ContentCreateAbility.php
index 6f8edcd..cf254cb 100644
--- a/src/Integrations/WordPress/Content/ContentCreateAbility.php
+++ b/src/Integrations/WordPress/Content/ContentCreateAbility.php
@@ -144,7 +144,7 @@ final class ContentCreateAbility implements Ability
         try {
             $layout = $withDivi ? $this->divi?->write($postId, $postType, self::sections($input)) : null;
         } catch (Throwable $e) {
-            $draft->discard($postId, $e, NewDraft::REASON_EXTRAS);
+            $draft->discard($postId, $e, NewDraft::REASON_LAYOUT);
         }
         if ($layout instanceof WP_Error) {
             return $draft->refuse($postId, $layout);
diff --git a/src/Integrations/WordPress/Content/NewDraft.php b/src/Integrations/WordPress/Content/NewDraft.php
index 753d7c9..24ae8b6 100644
--- a/src/Integrations/WordPress/Content/NewDraft.php
+++ b/src/Integrations/WordPress/Content/NewDraft.php
@@ -26,6 +26,7 @@ final class NewDraft
 {
     public const REASON_INSERT = 'WordPress hat beim Anlegen des Eintrags einen Fehler gemeldet.';
     public const REASON_EXTRAS = 'Felder, Begriffe oder Beitragsbild konnten nicht gespeichert werden.';
+    public const REASON_LAYOUT = 'Das Divi-Layout konnte nicht gespeichert werden.';
 
     public function __construct(
         private PostWriter $writer,
diff --git a/tests/Unit/Integrations/WordPress/Content/ContentCreateDiviTest.php b/tests/Unit/Integrations/WordPress/Content/ContentCreateDiviTest.php
index 510e947..85c76e5 100644
--- a/tests/Unit/Integrations/WordPress/Content/ContentCreateDiviTest.php
+++ b/tests/Unit/Integrations/WordPress/Content/ContentCreateDiviTest.php
@@ -13,6 +13,7 @@ use LIT\MCP\Integrations\Divi\Pages\DiviContentComposer;
 use LIT\MCP\Integrations\Divi\Pages\DiviSaver;
 use LIT\MCP\Integrations\WordPress\Content\ContentComposer;
 use LIT\MCP\Integrations\WordPress\Content\ContentCreateAbility;
+use LIT\MCP\Integrations\WordPress\Content\NewDraft;
 use LIT\MCP\Integrations\WordPress\Content\PostWriter;
 use LIT\MCP\Integrations\WordPress\Schema\ContentSchema;
 use LIT\MCP\Tests\Support\DiviWriterFixture;
@@ -168,6 +169,9 @@ final class ContentCreateDiviTest extends TestCase
             self::fail('WriteFailed expected');
         } catch (WriteFailed $e) {
             self::assertTrue($e->rolledBack);
+            // Ruling S50 / ledger T9: the client reads about the layout, not about fields or terms.
+            self::assertSame(NewDraft::REASON_LAYOUT, $e->reason);
+            self::assertStringContainsString('Divi-Layout', $e->reason);
         }
     }