diff --git a/Mp1.json b/Mp1.json
index c259ae2d4185aa5cb1664863c1fe3ca3d784f23a..dddf928205bb76fe9b07bdb976ddd57c5f6afeeb 100644
--- a/Mp1.json
+++ b/Mp1.json
@@ -799,6 +799,10 @@
       "EndPointInfo.Address": {
         "description": "A IP address and port pair",
         "type": "object",
+        "required": [
+          "host",
+          "port"
+        ],
         "properties": {
           "host": {
             "$ref": "#/components/schemas/EndPointInfo.Address.Host"
diff --git a/Mp1.yaml b/Mp1.yaml
index c2e1846153639d14401aa049140f33ed6be61bf3..1ec7efeba79f3b7e3a46245de72f8c5d4df1dd67 100644
--- a/Mp1.yaml
+++ b/Mp1.yaml
@@ -594,6 +594,9 @@ components:
     EndPointInfo.Address:
       description: A IP address and port pair
       type: object
+      required:
+        - host
+        - port
       properties:
         host:
           $ref: '#/components/schemas/EndPointInfo.Address.Host'