diff --git a/components/ILIAS/HTTP/src/StatusCode.php b/components/ILIAS/HTTP/src/StatusCode.php
index cdac27a2a57f..0d46f3a347a5 100755
--- a/components/ILIAS/HTTP/src/StatusCode.php
+++ b/components/ILIAS/HTTP/src/StatusCode.php
@@ -71,6 +71,7 @@ interface StatusCode
     public const HTTP_UNSUPPORTED_MEDIA_TYPE = 415;
     public const HTTP_REQUESTED_RANGE_NOT_SATISFIABLE = 416;
     public const HTTP_EXPECTATION_FAILED = 417;
+    public const HTTP_UNPROCESSABLE_ENTITY = 422;
     public const HTTP_TOO_MANY_REQUESTS = 429;
     // [Server Error 5xx]