diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2021-11-01-preview/ManagedInstances.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2021-11-01-preview/ManagedInstances.json
index 87b21314f14c..1a98a9719a61 100644
--- a/specification/sql/resource-manager/Microsoft.Sql/preview/2021-11-01-preview/ManagedInstances.json
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2021-11-01-preview/ManagedInstances.json
@@ -998,11 +998,7 @@
           "x-ms-enum": {
             "name": "BackupStorageRedundancy",
             "modelAsString": true
-          },
-          "x-ms-mutability": [
-            "read",
-            "create"
-          ]
+          }
         },
         "zoneRedundant": {
           "description": "Whether or not the multi-az is enabled.",
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/ManagedInstances.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/ManagedInstances.json
index f12f47eee13b..d0a92ef7815b 100644
--- a/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/ManagedInstances.json
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-02-01-preview/ManagedInstances.json
@@ -998,11 +998,7 @@
           "x-ms-enum": {
             "name": "BackupStorageRedundancy",
             "modelAsString": true
-          },
-          "x-ms-mutability": [
-            "read",
-            "create"
-          ]
+          }
         },
         "zoneRedundant": {
           "description": "Whether or not the multi-az is enabled.",
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2022-05-01-preview/ManagedInstances.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-05-01-preview/ManagedInstances.json
index 5edd69cc42ec..df2e9b9b15f4 100644
--- a/specification/sql/resource-manager/Microsoft.Sql/preview/2022-05-01-preview/ManagedInstances.json
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-05-01-preview/ManagedInstances.json
@@ -999,11 +999,7 @@
           "x-ms-enum": {
             "name": "BackupStorageRedundancy",
             "modelAsString": true
-          },
-          "x-ms-mutability": [
-            "read",
-            "create"
-          ]
+          }
         },
         "zoneRedundant": {
           "description": "Whether or not the multi-az is enabled.",
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2022-08-01-preview/ManagedInstances.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-08-01-preview/ManagedInstances.json
index 7c4f4e3ea1d9..0cebf2912c17 100644
--- a/specification/sql/resource-manager/Microsoft.Sql/preview/2022-08-01-preview/ManagedInstances.json
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-08-01-preview/ManagedInstances.json
@@ -1089,11 +1089,7 @@
           "x-ms-enum": {
             "name": "BackupStorageRedundancy",
             "modelAsString": true
-          },
-          "x-ms-mutability": [
-            "read",
-            "create"
-          ]
+          }
         },
         "zoneRedundant": {
           "description": "Whether or not the multi-az is enabled.",
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2022-11-01-preview/ManagedInstances.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-11-01-preview/ManagedInstances.json
index 79bb2a54583d..493950d3d0b0 100644
--- a/specification/sql/resource-manager/Microsoft.Sql/preview/2022-11-01-preview/ManagedInstances.json
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2022-11-01-preview/ManagedInstances.json
@@ -1096,11 +1096,7 @@
           "x-ms-enum": {
             "name": "BackupStorageRedundancy",
             "modelAsString": true
-          },
-          "x-ms-mutability": [
-            "read",
-            "create"
-          ]
+          }
         },
         "zoneRedundant": {
           "description": "Whether or not the multi-az is enabled.",
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2023-02-01-preview/ManagedInstances.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2023-02-01-preview/ManagedInstances.json
index bf279a24059c..df1673ddc64b 100644
--- a/specification/sql/resource-manager/Microsoft.Sql/preview/2023-02-01-preview/ManagedInstances.json
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2023-02-01-preview/ManagedInstances.json
@@ -1189,11 +1189,7 @@
           "x-ms-enum": {
             "name": "BackupStorageRedundancy",
             "modelAsString": true
-          },
-          "x-ms-mutability": [
-            "read",
-            "create"
-          ]
+          }
         },
         "zoneRedundant": {
           "description": "Whether or not the multi-az is enabled.",
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2023-05-01-preview/ManagedInstances.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2023-05-01-preview/ManagedInstances.json
index ae40350485ce..eba46192d23b 100644
--- a/specification/sql/resource-manager/Microsoft.Sql/preview/2023-05-01-preview/ManagedInstances.json
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2023-05-01-preview/ManagedInstances.json
@@ -1197,11 +1197,7 @@
           "x-ms-enum": {
             "name": "BackupStorageRedundancy",
             "modelAsString": true
-          },
-          "x-ms-mutability": [
-            "read",
-            "create"
-          ]
+          }
         },
         "zoneRedundant": {
           "description": "Whether or not the multi-az is enabled.",
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2023-08-01-preview/ManagedInstances.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2023-08-01-preview/ManagedInstances.json
index 5092147381ca..f137c7410029 100644
--- a/specification/sql/resource-manager/Microsoft.Sql/preview/2023-08-01-preview/ManagedInstances.json
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2023-08-01-preview/ManagedInstances.json
@@ -1223,11 +1223,7 @@
           "x-ms-enum": {
             "name": "BackupStorageRedundancy",
             "modelAsString": true
-          },
-          "x-ms-mutability": [
-            "read",
-            "create"
-          ]
+          }
         },
         "zoneRedundant": {
           "description": "Whether or not the multi-az is enabled.",
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2024-05-01-preview/ManagedInstances.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2024-05-01-preview/ManagedInstances.json
index 4563f4da3428..2feff0b55207 100644
--- a/specification/sql/resource-manager/Microsoft.Sql/preview/2024-05-01-preview/ManagedInstances.json
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2024-05-01-preview/ManagedInstances.json
@@ -1223,11 +1223,7 @@
           "x-ms-enum": {
             "name": "BackupStorageRedundancy",
             "modelAsString": true
-          },
-          "x-ms-mutability": [
-            "read",
-            "create"
-          ]
+          }
         },
         "zoneRedundant": {
           "description": "Whether or not the multi-az is enabled.",
diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2024-08-01-preview/ManagedInstances.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2024-08-01-preview/ManagedInstances.json
index c2283c67689d..8ddc6d73ce01 100644
--- a/specification/sql/resource-manager/Microsoft.Sql/preview/2024-08-01-preview/ManagedInstances.json
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2024-08-01-preview/ManagedInstances.json
@@ -1263,11 +1263,7 @@
           "x-ms-enum": {
             "name": "BackupStorageRedundancy",
             "modelAsString": true
-          },
-          "x-ms-mutability": [
-            "read",
-            "create"
-          ]
+          }
         },
         "zoneRedundant": {
           "description": "Whether or not the zone-redundancy is enabled.",