diff --git a/specification/apimanagement/resource-manager/Microsoft.ApiManagement/preview/2019-12-01-preview/apimdeployment.json b/specification/apimanagement/resource-manager/Microsoft.ApiManagement/preview/2019-12-01-preview/apimdeployment.json
index fa820c5a0170..d2c39f3c94fe 100644
--- a/specification/apimanagement/resource-manager/Microsoft.ApiManagement/preview/2019-12-01-preview/apimdeployment.json
+++ b/specification/apimanagement/resource-manager/Microsoft.ApiManagement/preview/2019-12-01-preview/apimdeployment.json
@@ -248,6 +248,9 @@
           },
           "ApiManagementCreateServiceWithSystemCertificates": {
             "$ref": "./examples/ApiManagementCreateServiceWithSystemCertificates.json"
+          },
+          "ApiManagementCreateServiceWithUserAssignedIdentity": {
+            "$ref": "./examples/ApiManagementCreateServiceWithUserAssignedIdentity.json"
           }
         },
         "parameters": [
@@ -1250,11 +1253,12 @@
         "capacity": {
           "type": "integer",
           "format": "int32",
-          "description": "Capacity of the SKU (number of deployed units of the SKU)."
+          "description": "Capacity of the SKU (number of deployed units of the SKU). For Consumption SKU capacity must be specified as 0."
         }
       },
       "required": [
-        "name"
+        "name",
+        "capacity"
       ],
       "description": "API Management service resource SKU properties."
     },
diff --git a/specification/apimanagement/resource-manager/Microsoft.ApiManagement/preview/2019-12-01-preview/examples/ApiManagementCreateServiceHavingMsi.json b/specification/apimanagement/resource-manager/Microsoft.ApiManagement/preview/2019-12-01-preview/examples/ApiManagementCreateServiceHavingMsi.json
index 594ac0d96b47..8fb2e7b79560 100644
--- a/specification/apimanagement/resource-manager/Microsoft.ApiManagement/preview/2019-12-01-preview/examples/ApiManagementCreateServiceHavingMsi.json
+++ b/specification/apimanagement/resource-manager/Microsoft.ApiManagement/preview/2019-12-01-preview/examples/ApiManagementCreateServiceHavingMsi.json
@@ -10,7 +10,8 @@
         "publisherName": "autorestsdk"
       },
       "sku": {
-        "name": "Consumption"
+        "name": "Consumption",
+        "capacity": 0
       },
       "identity": {
         "type": "SystemAssigned"
diff --git a/specification/apimanagement/resource-manager/Microsoft.ApiManagement/preview/2019-12-01-preview/examples/ApiManagementCreateServiceWithUserAssignedIdentity.json b/specification/apimanagement/resource-manager/Microsoft.ApiManagement/preview/2019-12-01-preview/examples/ApiManagementCreateServiceWithUserAssignedIdentity.json
new file mode 100644
index 000000000000..eaebda541b0a
--- /dev/null
+++ b/specification/apimanagement/resource-manager/Microsoft.ApiManagement/preview/2019-12-01-preview/examples/ApiManagementCreateServiceWithUserAssignedIdentity.json
@@ -0,0 +1,136 @@
+{
+  "parameters": {
+    "serviceName": "apimService1",
+    "resourceGroupName": "rg1",
+    "api-version": "2019-12-01-preview",
+    "subscriptionId": "subid",
+    "parameters": {
+      "properties": {
+        "publisherEmail": "apim@autorestsdk.com",
+        "publisherName": "autorestsdk"
+      },
+      "sku": {
+        "name": "Consumption",
+        "capacity": 0
+      },
+      "identity": {
+        "type": "UserAssigned",
+        "userAssignedIdentities": {
+          "/subscriptions/subid/resourcegroups/rg1/providers/Microsoft.ManagedIdentity/userAssignedIdentities/apimService1": {}
+        }
+      },
+      "location": "West US",
+      "tags": {
+        "tag1": "value1",
+        "tag2": "value2",
+        "tag3": "value3"
+      }
+    }
+  },
+  "responses": {
+    "201": {
+      "headers": {
+        "location": "https://management.azure.com/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.ApiManagement/service/apimService1/operationresults/dGVjaGVkX01hbmFnZVJvbGVfNWRiNGI3Ng==?api-version=2019-12-01-preview"
+      },
+      "body": {
+        "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.ApiManagement/service/apimService1",
+        "name": "apimService1",
+        "type": "Microsoft.ApiManagement/service",
+        "tags": {
+          "tag1": "value1",
+          "tag2": "value2",
+          "tag3": "value3"
+        },
+        "location": "West US",
+        "etag": "AAAAAAAFzyQ=",
+        "properties": {
+          "publisherEmail": "apim@autorestsdk.com",
+          "publisherName": "autorestsdk",
+          "notificationSenderEmail": "apimgmt-noreply@mail.windowsazure.com",
+          "provisioningState": "Created",
+          "targetProvisioningState": "Activating",
+          "createdAtUtc": "2020-03-12T01:05:33.4573398Z",
+          "hostnameConfigurations": [
+            {
+              "type": "Proxy",
+              "hostName": "apimService1.azure-api.net",
+              "negotiateClientCertificate": false,
+              "defaultSslBinding": true
+            }
+          ],
+          "virtualNetworkType": "None"
+        },
+        "sku": {
+          "name": "Consumption",
+          "capacity": 0
+        },
+        "identity": {
+          "type": "UserAssigned",
+          "userAssignedIdentities": {
+            "/subscriptions/subid/resourcegroups/rg1/providers/Microsoft.ManagedIdentity/userAssignedIdentities/apimService1": {}
+          }
+        }
+      }
+    },
+    "200": {
+      "body": {
+        "id": "/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.ApiManagement/service/apimService1",
+        "name": "apimService1",
+        "type": "Microsoft.ApiManagement/service",
+        "tags": {
+          "tag1": "value1",
+          "tag2": "value2",
+          "tag3": "value3"
+        },
+        "location": "West US",
+        "etag": "AAAAAAAFzyk=",
+        "properties": {
+          "publisherEmail": "apim@autorestsdk.com",
+          "publisherName": "autorestsdk",
+          "notificationSenderEmail": "apimgmt-noreply@mail.windowsazure.com",
+          "provisioningState": "Succeeded",
+          "targetProvisioningState": "",
+          "createdAtUtc": "2020-03-12T01:05:33.4573398Z",
+          "gatewayUrl": "https://apimService1.azure-api.net",
+          "hostnameConfigurations": [
+            {
+              "type": "Proxy",
+              "hostName": "apimService1.azure-api.net",
+              "negotiateClientCertificate": false,
+              "defaultSslBinding": true
+            }
+          ],
+          "customProperties": {
+            "Microsoft.WindowsAzure.ApiManagement.Gateway.Security.Protocols.Tls10": "False",
+            "Microsoft.WindowsAzure.ApiManagement.Gateway.Security.Protocols.Tls11": "False",
+            "Microsoft.WindowsAzure.ApiManagement.Gateway.Security.Backend.Protocols.Tls10": "False",
+            "Microsoft.WindowsAzure.ApiManagement.Gateway.Security.Backend.Protocols.Tls11": "False",
+            "Microsoft.WindowsAzure.ApiManagement.Gateway.Security.Backend.Protocols.Ssl30": "False",
+            "Microsoft.WindowsAzure.ApiManagement.Gateway.Protocols.Server.Http2": "False"
+          },
+          "virtualNetworkType": "None",
+          "disableGateway": false
+        },
+        "sku": {
+          "name": "Consumption",
+          "capacity": 0
+        },
+        "identity": {
+          "type": "UserAssigned",
+          "tenantId": "XXXXX-86f1-41af-XXXX-2d7cd011db47",
+          "userAssignedIdentities": {
+            "/subscriptions/subid/resourcegroups/rg1/providers/Microsoft.ManagedIdentity/userAssignedIdentities/apimService1": {
+              "principalId": "XXXXX-6e62-4649-9f54-a119fc1ba85e",
+              "clientId": "5a2c6b8e-0905-XXXX-a772-993c9418137f"
+            }
+          }
+        }
+      }
+    },
+    "202": {
+      "headers": {
+        "location": "https://management.azure.com/subscriptions/subid/resourceGroups/rg1/providers/Microsoft.ApiManagement/service/apimService1/operationresults/dGVjaGVkX01hbmFnZVJvbGVfNWRiNGI3Ng==?api-version=2019-12-01-preview"
+      }
+    }
+  }
+}