diff --git a/typo3/sysext/extbase/Classes/Persistence/Generic/Mapper/DataMapper.php b/typo3/sysext/extbase/Classes/Persistence/Generic/Mapper/DataMapper.php
index 8a0bb209a403..5d46849c6f96 100644
--- a/typo3/sysext/extbase/Classes/Persistence/Generic/Mapper/DataMapper.php
+++ b/typo3/sysext/extbase/Classes/Persistence/Generic/Mapper/DataMapper.php
@@ -657,11 +657,6 @@ protected function mapObjectToClassProperty(DomainObjectInterface $parentObject,
             return $this->getEmptyRelationValue($parentObject, $propertyName);
         }
 
-        $property = $this->reflectionService->getClassSchema(get_class($parentObject))->getProperty($propertyName);
-        if ($this->persistenceSession->hasIdentifier((string)$fieldValue, $property->getType())) {
-            return $this->persistenceSession->getObjectByIdentifier((string)$fieldValue, $property->getType());
-        }
-
         $primaryType = $this->reflectionService
             ->getClassSchema(get_class($parentObject))
             ->getProperty($propertyName)
diff --git a/typo3/sysext/extbase/Classes/Reflection/ClassSchema/Property.php b/typo3/sysext/extbase/Classes/Reflection/ClassSchema/Property.php
index 2a3db2118ec0..a1b1bdc309f1 100644
--- a/typo3/sysext/extbase/Classes/Reflection/ClassSchema/Property.php
+++ b/typo3/sysext/extbase/Classes/Reflection/ClassSchema/Property.php
@@ -66,21 +66,6 @@ public function getName(): string
         return $this->name;
     }
 
-    /**
-     * Returns the type (string, integer, ...) set by the `@var` doc comment and php property type declarations
-     *
-     * Returns null if type could not be evaluated
-     *
-     * @return non-empty-string|null
-     *
-     * @deprecated since v12, will be removed in v13.
-     */
-    public function getType(): ?string
-    {
-        $primaryType = $this->getTypes()[0] ?? null;
-        return $primaryType?->getClassName() ?? $primaryType?->getBuiltinType();
-    }
-
     /**
      * Returns the types (string, integer, ...) set by the `@var` doc comment and php property type declarations
      *