diff --git a/specification/synapse/resource-manager/Microsoft.Synapse/preview/2021-06-01-preview/bigDataPool.json b/specification/synapse/resource-manager/Microsoft.Synapse/preview/2021-06-01-preview/bigDataPool.json
index 673b26632662..8903f3b57aab 100644
--- a/specification/synapse/resource-manager/Microsoft.Synapse/preview/2021-06-01-preview/bigDataPool.json
+++ b/specification/synapse/resource-manager/Microsoft.Synapse/preview/2021-06-01-preview/bigDataPool.json
@@ -420,7 +420,11 @@
         "isAutotuneEnabled": {
           "type": "boolean",
           "title": "Enable Autotune",
-          "description": "Whether autotune is required or not."
+          "description": "Whether autotune is required or not.",
+          "x-ms-mutability": [
+            "create",
+            "read"
+          ]
         },
         "sessionLevelPackagesEnabled": {
           "type": "boolean",
@@ -514,7 +518,11 @@
         "minNodeCount": {
           "type": "integer",
           "format": "int32",
-          "description": "The minimum number of nodes the Big Data pool can support."
+          "description": "The minimum number of nodes the Big Data pool can support.",
+          "x-ms-mutability": [
+            "create",
+            "read"
+          ]
         },
         "enabled": {
           "type": "boolean",
@@ -523,7 +531,11 @@
         "maxNodeCount": {
           "type": "integer",
           "format": "int32",
-          "description": "The maximum number of nodes the Big Data pool can support."
+          "description": "The maximum number of nodes the Big Data pool can support.",
+          "x-ms-mutability": [
+            "create",
+            "read"
+          ]
         }
       }
     },
@@ -613,7 +625,11 @@
           "x-ms-enum": {
             "name": "ConfigurationType",
             "modelAsString": true
-          }
+          },
+          "x-ms-mutability": [
+            "create",
+            "read"
+          ]
         }
       }
     }
diff --git a/specification/synapse/resource-manager/Microsoft.Synapse/stable/2021-06-01/bigDataPool.json b/specification/synapse/resource-manager/Microsoft.Synapse/stable/2021-06-01/bigDataPool.json
index fbe4ff84d9b1..b97062c35f5e 100644
--- a/specification/synapse/resource-manager/Microsoft.Synapse/stable/2021-06-01/bigDataPool.json
+++ b/specification/synapse/resource-manager/Microsoft.Synapse/stable/2021-06-01/bigDataPool.json
@@ -420,7 +420,11 @@
         "isAutotuneEnabled": {
           "type": "boolean",
           "title": "Enable Autotune",
-          "description": "Whether autotune is required or not."
+          "description": "Whether autotune is required or not.",
+          "x-ms-mutability": [
+            "create",
+            "read"
+          ]
         },
         "sessionLevelPackagesEnabled": {
           "type": "boolean",
@@ -514,7 +518,11 @@
         "minNodeCount": {
           "type": "integer",
           "format": "int32",
-          "description": "The minimum number of nodes the Big Data pool can support."
+          "description": "The minimum number of nodes the Big Data pool can support.",
+          "x-ms-mutability": [
+            "create",
+            "read"
+          ]
         },
         "enabled": {
           "type": "boolean",
@@ -523,7 +531,11 @@
         "maxNodeCount": {
           "type": "integer",
           "format": "int32",
-          "description": "The maximum number of nodes the Big Data pool can support."
+          "description": "The maximum number of nodes the Big Data pool can support.",
+          "x-ms-mutability": [
+            "create",
+            "read"
+          ]
         }
       }
     },
@@ -613,7 +625,11 @@
           "x-ms-enum": {
             "name": "ConfigurationType",
             "modelAsString": true
-          }
+          },
+          "x-ms-mutability": [
+            "create",
+            "read"
+          ]
         }
       }
     }