diff --git a/custom-words.txt b/custom-words.txt
index 563283df46c7..3f48549caeb2 100644
--- a/custom-words.txt
+++ b/custom-words.txt
@@ -1387,6 +1387,9 @@ UNOY
 unpairing
 Unparked
 unparsed
+unprepare
+unprepares
+unpreparing
 Unprovision
 unprovisioned
 Unprovisioning
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2019-06-01/examples/SubnetUnprepareNetworkPolicies.json b/specification/network/resource-manager/Microsoft.Network/stable/2019-06-01/examples/SubnetUnprepareNetworkPolicies.json
new file mode 100644
index 000000000000..24941c8e1876
--- /dev/null
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2019-06-01/examples/SubnetUnprepareNetworkPolicies.json
@@ -0,0 +1,16 @@
+{
+  "parameters": {
+    "api-version": "2019-06-01",
+    "subscriptionId": "subid",
+    "resourceGroupName": "rg1",
+    "virtualNetworkName": "test-vnet",
+    "subnetName": "subnet1",
+    "unprepareNetworkPoliciesRequestParameters": {
+      "serviceName": "Microsoft.Sql/managedInstances"
+    }
+  },
+  "responses": {
+    "200": {},
+    "202": {}
+  }
+}
diff --git a/specification/network/resource-manager/Microsoft.Network/stable/2019-06-01/virtualNetwork.json b/specification/network/resource-manager/Microsoft.Network/stable/2019-06-01/virtualNetwork.json
index e3d4578e2630..af0b13dfc3e6 100644
--- a/specification/network/resource-manager/Microsoft.Network/stable/2019-06-01/virtualNetwork.json
+++ b/specification/network/resource-manager/Microsoft.Network/stable/2019-06-01/virtualNetwork.json
@@ -593,6 +593,67 @@
         }
       }
     },
+    "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/virtualNetworks/{virtualNetworkName}/subnets/{subnetName}/UnprepareNetworkPolicies": {
+      "post": {
+        "operationId": "Subnets_UnprepareNetworkPolicies",
+        "description": "Unprepares a subnet by removing network intent policies.",
+        "parameters": [
+          {
+            "name": "resourceGroupName",
+            "in": "path",
+            "required": true,
+            "type": "string",
+            "description": "The name of the resource group."
+          },
+          {
+            "name": "virtualNetworkName",
+            "in": "path",
+            "required": true,
+            "type": "string",
+            "description": "The name of the virtual network."
+          },
+          {
+            "name": "subnetName",
+            "in": "path",
+            "required": true,
+            "type": "string",
+            "description": "The name of the subnet."
+          },
+          {
+            "name": "unprepareNetworkPoliciesRequestParameters",
+            "in": "body",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/UnprepareNetworkPoliciesRequest"
+            },
+            "description": "Parameters supplied to unprepare subnet to remove network intent policies."
+          },
+          {
+            "$ref": "./network.json#/parameters/ApiVersionParameter"
+          },
+          {
+            "$ref": "./network.json#/parameters/SubscriptionIdParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Unpreparing subnet by removing network intent policies is successful."
+          },
+          "202": {
+            "description": "Accepted and the operation will complete asynchronously."
+          }
+        },
+        "x-ms-long-running-operation": true,
+        "x-ms-long-running-operation-options": {
+          "final-state-via": "location"
+        },
+        "x-ms-examples": {
+          "Unprepare Network Policies": {
+            "$ref": "./examples/SubnetUnprepareNetworkPolicies.json"
+          }
+        }
+      }
+    },
     "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/virtualNetworks/{virtualNetworkName}/subnets/{subnetName}/ResourceNavigationLinks": {
       "get": {
         "operationId": "ResourceNavigationLinks_List",
@@ -1692,6 +1753,15 @@
       },
       "description": "Details of PrepareNetworkPolicies for Subnet."
     },
+    "UnprepareNetworkPoliciesRequest": {
+      "properties": {
+        "serviceName": {
+          "type": "string",
+          "description": "The name of the service for which subnet is being unprepared for."
+        }
+      },
+      "description": "Details of UnprepareNetworkPolicies for Subnet."
+    },
     "NetworkIntentPolicyConfiguration": {
       "properties": {
         "networkIntentPolicyName": {