diff --git a/application/Espo/Core/FieldProcessing/LinkParent/Loader.php b/application/Espo/Core/FieldProcessing/LinkParent/Loader.php
index 05fc5249a0..f0954b3273 100644
--- a/application/Espo/Core/FieldProcessing/LinkParent/Loader.php
+++ b/application/Espo/Core/FieldProcessing/LinkParent/Loader.php
@@ -41,17 +41,11 @@ use Espo\ORM\Defs as OrmDefs;
  */
 class Loader implements LoaderInterface
 {
-    private OrmDefs $ormDefs;
+    /** @var array<string, string[]> */
+    private array $fieldListCacheMap = [];
 
-    /**
-     * @var array<string, string[]>
-     */
-    private $fieldListCacheMap = [];
-
-    public function __construct(OrmDefs $ormDefs)
-    {
-        $this->ormDefs = $ormDefs;
-    }
+    public function __construct(private OrmDefs $ormDefs)
+    {}
 
     public function process(Entity $entity, Params $params): void
     {
@@ -84,6 +78,12 @@ class Loader implements LoaderInterface
 
             $name = $fieldDefs->getName();
 
+            if (!$entityDefs->hasRelation($fieldDefs->getName())) {
+                // Otherwise, loadParentNameField produces an error.
+                // @todo Revise.
+                continue;
+            }
+
             $list[] = $name;
         }