diff --git a/schemas/2018-03-01-preview/Microsoft.SignalRService.json b/schemas/2018-03-01-preview/Microsoft.SignalRService.json
index 23baaa873f..e8e508b315 100644
--- a/schemas/2018-03-01-preview/Microsoft.SignalRService.json
+++ b/schemas/2018-03-01-preview/Microsoft.SignalRService.json
@@ -136,4 +136,4 @@
       "description": "Settings used to provision or configure the resource."
     }
   }
-}
\ No newline at end of file
+}
diff --git a/schemas/2018-10-01/Microsoft.SignalRService.json b/schemas/2018-10-01/Microsoft.SignalRService.json
index 198e2bd550..6585edb8fe 100644
--- a/schemas/2018-10-01/Microsoft.SignalRService.json
+++ b/schemas/2018-10-01/Microsoft.SignalRService.json
@@ -227,4 +227,4 @@
       "description": "Feature of a SignalR resource, which controls the SignalR runtime behavior."
     }
   }
-}
\ No newline at end of file
+}
diff --git a/schemas/2020-05-01/Microsoft.SignalRService.json b/schemas/2020-05-01/Microsoft.SignalRService.json
index 73e971e8ff..f906e36653 100644
--- a/schemas/2020-05-01/Microsoft.SignalRService.json
+++ b/schemas/2020-05-01/Microsoft.SignalRService.json
@@ -317,18 +317,10 @@
           ],
           "description": "Optional, integer. The unit count of SignalR resource. 1 by default.\r\n\r\nIf present, following values are allowed:\r\n    Free: 1\r\n    Standard: 1,2,5,10,20,50,100"
         },
-        "family": {
-          "type": "string",
-          "description": "Optional string. For future use."
-        },
         "name": {
           "type": "string",
           "description": "The name of the SKU. Required.\r\n\r\nAllowed values: Standard_S1, Free_F1"
         },
-        "size": {
-          "type": "string",
-          "description": "Optional string. For future use."
-        },
         "tier": {
           "oneOf": [
             {
@@ -513,10 +505,6 @@
           ],
           "description": "List of SignalR featureFlags. e.g. ServiceMode.\r\n\r\nFeatureFlags that are not included in the parameters for the update operation will not be modified.\r\nAnd the response will only include featureFlags that are explicitly set. \r\nWhen a featureFlag is not explicitly set, SignalR service will use its globally default value. \r\nBut keep in mind, the default value doesn't mean \"false\". It varies in terms of different FeatureFlags."
         },
-        "hostNamePrefix": {
-          "type": "string",
-          "description": "Prefix for the hostName of the SignalR service. Retained for future use.\r\nThe hostname will be of format: <hostNamePrefix>.service.signalr.net."
-        },
         "networkACLs": {
           "oneOf": [
             {
@@ -607,4 +595,4 @@
       "description": "Upstream template item settings. It defines the Upstream URL of the incoming requests.\r\nThe template defines the pattern of the event, the hub or the category of the incoming request that matches current URL template."
     }
   }
-}
\ No newline at end of file
+}
diff --git a/schemas/2020-07-01-preview/Microsoft.SignalRService.json b/schemas/2020-07-01-preview/Microsoft.SignalRService.json
index 53ad8b5448..6c378c9ef2 100644
--- a/schemas/2020-07-01-preview/Microsoft.SignalRService.json
+++ b/schemas/2020-07-01-preview/Microsoft.SignalRService.json
@@ -375,18 +375,10 @@
           ],
           "description": "Optional, integer. The unit count of SignalR resource. 1 by default.\r\n\r\nIf present, following values are allowed:\r\n    Free: 1\r\n    Standard: 1,2,5,10,20,50,100"
         },
-        "family": {
-          "type": "string",
-          "description": "Optional string. For future use."
-        },
         "name": {
           "type": "string",
           "description": "The name of the SKU. Required.\r\n\r\nAllowed values: Standard_S1, Free_F1"
         },
-        "size": {
-          "type": "string",
-          "description": "Optional string. For future use."
-        },
         "tier": {
           "oneOf": [
             {
@@ -737,4 +729,4 @@
       "description": "Properties of user assigned identity."
     }
   }
-}
\ No newline at end of file
+}