diff --git a/specification/dataprotection/resource-manager/Microsoft.DataProtection/preview/2022-10-01-preview/dataprotection.json b/specification/dataprotection/resource-manager/Microsoft.DataProtection/preview/2022-10-01-preview/dataprotection.json
index 51c5548a8ec3..8d80f7ffff76 100644
--- a/specification/dataprotection/resource-manager/Microsoft.DataProtection/preview/2022-10-01-preview/dataprotection.json
+++ b/specification/dataprotection/resource-manager/Microsoft.DataProtection/preview/2022-10-01-preview/dataprotection.json
@@ -4841,7 +4841,8 @@
         },
         "isVaultProtectedByResourceGuard": {
           "description": "Is vault protected by resource guard",
-          "type": "boolean"
+          "type": "boolean",
+          "readOnly": true
         }
       },
       "required": [
diff --git a/specification/dataprotection/resource-manager/Microsoft.DataProtection/stable/2022-05-01/dataprotection.json b/specification/dataprotection/resource-manager/Microsoft.DataProtection/stable/2022-05-01/dataprotection.json
index 986fc296d0bd..93f081237793 100644
--- a/specification/dataprotection/resource-manager/Microsoft.DataProtection/stable/2022-05-01/dataprotection.json
+++ b/specification/dataprotection/resource-manager/Microsoft.DataProtection/stable/2022-05-01/dataprotection.json
@@ -4323,7 +4323,8 @@
         },
         "isVaultProtectedByResourceGuard": {
           "description": "Is vault protected by resource guard",
-          "type": "boolean"
+          "type": "boolean",
+          "readOnly": true
         }
       },
       "required": [