diff --git a/api/src/main/java/fitconnect/api/validation/MetadataValidator.java b/api/src/main/java/fitconnect/api/validation/MetadataValidator.java
index 6c1e3776a30bb950d49a6977a2e8c4936b4cd92a..f519682cf0b42b581821171f639bbd5f1f0a6c3a 100644
--- a/api/src/main/java/fitconnect/api/validation/MetadataValidator.java
+++ b/api/src/main/java/fitconnect/api/validation/MetadataValidator.java
@@ -6,6 +6,8 @@ import fitconnect.api.domain.metadata.data.Data;
 
 /**
  * A validator that ensure the integrity of the transferred metadata of a submission
+ *
+ * For further information see: <a href="https://docs.fitko.de/fit-connect/docs/sending/metadata#integrity">Metadata Integrity</a>
  */
 public interface MetadataValidator {