diff --git a/Model/ValidatorResult.php b/Model/ValidatorResult.php
index 0e79047..a53e809 100644
--- a/Model/ValidatorResult.php
+++ b/Model/ValidatorResult.php
@@ -43,6 +43,7 @@ public static function configureData(OptionsResolver $resolver): void
             ->setDefault('reason', null)->setAllowedTypes('reason', ['int', 'null'])
             ->setDefault('reasonMessage', null)->setAllowedTypes('reasonMessage', ['string', 'null'])
             ->setDefault('result', null)->setAllowedTypes('result', ['array', 'null'])
+            ->setDefault('externalId', null)->setAllowedTypes('externalId', ['string', 'null'])
         ;
     }