diff --git a/projects/museumpassmusees/reference/partner-api.json b/projects/museumpassmusees/reference/partner-api.json
index 2374c86a1..edc678a85 100644
--- a/projects/museumpassmusees/reference/partner-api.json
+++ b/projects/museumpassmusees/reference/partner-api.json
@@ -60,7 +60,8 @@
         "required": [
           "id",
           "vouchers"
-        ]
+        ],
+        "x-internal": true
       },
       "Pass": {
         "title": "Pass",
@@ -619,4 +620,4 @@
       "name": "Vouchers"
     }
   ]
-}
+}
\ No newline at end of file