diff --git a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/AppAvailabilityInfo.java b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/AppAvailabilityInfo.java
new file mode 100644
index 000000000000..5c74a2ea3a6b
--- /dev/null
+++ b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/AppAvailabilityInfo.java
@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.iotcentral.v2018_09_01;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.iotcentral.v2018_09_01.implementation.IoTCentralManager;
+import com.microsoft.azure.management.iotcentral.v2018_09_01.implementation.AppAvailabilityInfoInner;
+
+/**
+ * Type representing AppAvailabilityInfo.
+ */
+public interface AppAvailabilityInfo extends HasInner<AppAvailabilityInfoInner>, HasManager<IoTCentralManager> {
+    /**
+     * @return the message value.
+     */
+    String message();
+
+    /**
+     * @return the nameAvailable value.
+     */
+    Boolean nameAvailable();
+
+    /**
+     * @return the reason value.
+     */
+    String reason();
+
+}
diff --git a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/Apps.java b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/Apps.java
index 4b97c49f5b0f..a6f47ea1b047 100644
--- a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/Apps.java
+++ b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/Apps.java
@@ -25,10 +25,19 @@ public interface Apps extends SupportsCreating<App.DefinitionStages.Blank>, Supp
     /**
      * Check if an IoT Central application name is available.
      *
-     * @param name The name of the IoT Central application instance to check.
+     * @param nameAvailabilityInputs Set the name parameter in the NameAvailabilityInputs structure to the name of the IoT Central application to check.
      * @throws IllegalArgumentException thrown if parameters fail the validation
      * @return the observable for the request
      */
-    Observable<AppNameAvailabilityInfo> checkNameAvailabilityAsync(String name);
+    Observable<AppAvailabilityInfo> checkNameAvailabilityAsync(NameAvailabilityInputs nameAvailabilityInputs);
+
+    /**
+     * Check if an IoT Central application subdomain is available.
+     *
+     * @param subdomainAvailabilityInputs Set the subdomain parameter in the SubdomainAvailabilityInputs structure to the subdomain of the IoT Central application to check.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<AppAvailabilityInfo> checkSubdomainAvailabilityAsync(SubdomainAvailabilityInputs subdomainAvailabilityInputs);
 
 }
diff --git a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/ErrorDetails.java b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/ErrorDetails.java
index 1b0cc3bc4650..266247077b1d 100644
--- a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/ErrorDetails.java
+++ b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/ErrorDetails.java
@@ -15,48 +15,29 @@
  */
 public class ErrorDetails {
     /**
-     * The error code.
+     * The error property.
      */
-    @JsonProperty(value = "code", access = JsonProperty.Access.WRITE_ONLY)
-    private String code;
+    @JsonProperty(value = "error")
+    private ErrorResponseBody error;
 
     /**
-     * The error message.
-     */
-    @JsonProperty(value = "message", access = JsonProperty.Access.WRITE_ONLY)
-    private String message;
-
-    /**
-     * The target of the particular error.
-     */
-    @JsonProperty(value = "target", access = JsonProperty.Access.WRITE_ONLY)
-    private String target;
-
-    /**
-     * Get the error code.
-     *
-     * @return the code value
-     */
-    public String code() {
-        return this.code;
-    }
-
-    /**
-     * Get the error message.
+     * Get the error value.
      *
-     * @return the message value
+     * @return the error value
      */
-    public String message() {
-        return this.message;
+    public ErrorResponseBody error() {
+        return this.error;
     }
 
     /**
-     * Get the target of the particular error.
+     * Set the error value.
      *
-     * @return the target value
+     * @param error the error value to set
+     * @return the ErrorDetails object itself.
      */
-    public String target() {
-        return this.target;
+    public ErrorDetails withError(ErrorResponseBody error) {
+        this.error = error;
+        return this;
     }
 
 }
diff --git a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/ErrorResponseBody.java b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/ErrorResponseBody.java
new file mode 100644
index 000000000000..9b63d8a7ab45
--- /dev/null
+++ b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/ErrorResponseBody.java
@@ -0,0 +1,89 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.iotcentral.v2018_09_01;
+
+import java.util.List;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Details of error response.
+ */
+public class ErrorResponseBody {
+    /**
+     * Error code, intended to be consumed programmatically.
+     */
+    @JsonProperty(value = "code", access = JsonProperty.Access.WRITE_ONLY)
+    private String code;
+
+    /**
+     * Description of the error, intended for display in user interface.
+     */
+    @JsonProperty(value = "message", access = JsonProperty.Access.WRITE_ONLY)
+    private String message;
+
+    /**
+     * Target of the particular error, for example name of the property.
+     */
+    @JsonProperty(value = "target", access = JsonProperty.Access.WRITE_ONLY)
+    private String target;
+
+    /**
+     * A list of additional details about the error.
+     */
+    @JsonProperty(value = "details")
+    private List<ErrorResponseBody> details;
+
+    /**
+     * Get error code, intended to be consumed programmatically.
+     *
+     * @return the code value
+     */
+    public String code() {
+        return this.code;
+    }
+
+    /**
+     * Get description of the error, intended for display in user interface.
+     *
+     * @return the message value
+     */
+    public String message() {
+        return this.message;
+    }
+
+    /**
+     * Get target of the particular error, for example name of the property.
+     *
+     * @return the target value
+     */
+    public String target() {
+        return this.target;
+    }
+
+    /**
+     * Get a list of additional details about the error.
+     *
+     * @return the details value
+     */
+    public List<ErrorResponseBody> details() {
+        return this.details;
+    }
+
+    /**
+     * Set a list of additional details about the error.
+     *
+     * @param details the details value to set
+     * @return the ErrorResponseBody object itself.
+     */
+    public ErrorResponseBody withDetails(List<ErrorResponseBody> details) {
+        this.details = details;
+        return this;
+    }
+
+}
diff --git a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/NameAvailabilityInputs.java b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/NameAvailabilityInputs.java
new file mode 100644
index 000000000000..7a4a3325c828
--- /dev/null
+++ b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/NameAvailabilityInputs.java
@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.iotcentral.v2018_09_01;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Input values.
+ */
+public class NameAvailabilityInputs {
+    /**
+     * The name of the IoT Central application instance to check.
+     */
+    @JsonProperty(value = "name")
+    private String name;
+
+    /**
+     * The name of the IoT Central resource name to query.
+     */
+    @JsonProperty(value = "type")
+    private String type;
+
+    /**
+     * Get the name of the IoT Central application instance to check.
+     *
+     * @return the name value
+     */
+    public String name() {
+        return this.name;
+    }
+
+    /**
+     * Set the name of the IoT Central application instance to check.
+     *
+     * @param name the name value to set
+     * @return the NameAvailabilityInputs object itself.
+     */
+    public NameAvailabilityInputs withName(String name) {
+        this.name = name;
+        return this;
+    }
+
+    /**
+     * Get the name of the IoT Central resource name to query.
+     *
+     * @return the type value
+     */
+    public String type() {
+        return this.type;
+    }
+
+    /**
+     * Set the name of the IoT Central resource name to query.
+     *
+     * @param type the type value to set
+     * @return the NameAvailabilityInputs object itself.
+     */
+    public NameAvailabilityInputs withType(String type) {
+        this.type = type;
+        return this;
+    }
+
+}
diff --git a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/OperationInputs.java b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/OperationInputs.java
index 19aeb03c1131..cf2b91aaeec4 100644
--- a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/OperationInputs.java
+++ b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/OperationInputs.java
@@ -17,9 +17,21 @@ public class OperationInputs {
     /**
      * The name of the IoT Central application instance to check.
      */
-    @JsonProperty(value = "name", required = true)
+    @JsonProperty(value = "name")
     private String name;
 
+    /**
+     * The subdomain of the IoT Central application instance to check.
+     */
+    @JsonProperty(value = "subdomain")
+    private String subdomain;
+
+    /**
+     * The name of the IoT Central resource name to query.
+     */
+    @JsonProperty(value = "type")
+    private String type;
+
     /**
      * Get the name of the IoT Central application instance to check.
      *
@@ -40,4 +52,44 @@ public OperationInputs withName(String name) {
         return this;
     }
 
+    /**
+     * Get the subdomain of the IoT Central application instance to check.
+     *
+     * @return the subdomain value
+     */
+    public String subdomain() {
+        return this.subdomain;
+    }
+
+    /**
+     * Set the subdomain of the IoT Central application instance to check.
+     *
+     * @param subdomain the subdomain value to set
+     * @return the OperationInputs object itself.
+     */
+    public OperationInputs withSubdomain(String subdomain) {
+        this.subdomain = subdomain;
+        return this;
+    }
+
+    /**
+     * Get the name of the IoT Central resource name to query.
+     *
+     * @return the type value
+     */
+    public String type() {
+        return this.type;
+    }
+
+    /**
+     * Set the name of the IoT Central resource name to query.
+     *
+     * @param type the type value to set
+     * @return the OperationInputs object itself.
+     */
+    public OperationInputs withType(String type) {
+        this.type = type;
+        return this;
+    }
+
 }
diff --git a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/SubdomainAvailabilityInputs.java b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/SubdomainAvailabilityInputs.java
new file mode 100644
index 000000000000..8d30248a94c6
--- /dev/null
+++ b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/SubdomainAvailabilityInputs.java
@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.iotcentral.v2018_09_01;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Input values.
+ */
+public class SubdomainAvailabilityInputs {
+    /**
+     * The subdomain of the IoT Central application instance to check.
+     */
+    @JsonProperty(value = "subdomain")
+    private String subdomain;
+
+    /**
+     * The name of the IoT Central resource name to query.
+     */
+    @JsonProperty(value = "type")
+    private String type;
+
+    /**
+     * Get the subdomain of the IoT Central application instance to check.
+     *
+     * @return the subdomain value
+     */
+    public String subdomain() {
+        return this.subdomain;
+    }
+
+    /**
+     * Set the subdomain of the IoT Central application instance to check.
+     *
+     * @param subdomain the subdomain value to set
+     * @return the SubdomainAvailabilityInputs object itself.
+     */
+    public SubdomainAvailabilityInputs withSubdomain(String subdomain) {
+        this.subdomain = subdomain;
+        return this;
+    }
+
+    /**
+     * Get the name of the IoT Central resource name to query.
+     *
+     * @return the type value
+     */
+    public String type() {
+        return this.type;
+    }
+
+    /**
+     * Set the name of the IoT Central resource name to query.
+     *
+     * @param type the type value to set
+     * @return the SubdomainAvailabilityInputs object itself.
+     */
+    public SubdomainAvailabilityInputs withType(String type) {
+        this.type = type;
+        return this;
+    }
+
+}
diff --git a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/implementation/AppAvailabilityInfoImpl.java b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/implementation/AppAvailabilityInfoImpl.java
new file mode 100644
index 000000000000..525e00b7ec9f
--- /dev/null
+++ b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/implementation/AppAvailabilityInfoImpl.java
@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.iotcentral.v2018_09_01.implementation;
+
+import com.microsoft.azure.management.iotcentral.v2018_09_01.AppAvailabilityInfo;
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+
+class AppAvailabilityInfoImpl extends WrapperImpl<AppAvailabilityInfoInner> implements AppAvailabilityInfo {
+    private final IoTCentralManager manager;
+    AppAvailabilityInfoImpl(AppAvailabilityInfoInner inner, IoTCentralManager manager) {
+        super(inner);
+        this.manager = manager;
+    }
+
+    @Override
+    public IoTCentralManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public String message() {
+        return this.inner().message();
+    }
+
+    @Override
+    public Boolean nameAvailable() {
+        return this.inner().nameAvailable();
+    }
+
+    @Override
+    public String reason() {
+        return this.inner().reason();
+    }
+
+}
diff --git a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/implementation/AppAvailabilityInfoInner.java b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/implementation/AppAvailabilityInfoInner.java
new file mode 100644
index 000000000000..9c8e6408898f
--- /dev/null
+++ b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/implementation/AppAvailabilityInfoInner.java
@@ -0,0 +1,63 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.iotcentral.v2018_09_01.implementation;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * The properties indicating whether a given IoT Central application
+ * information is available.
+ */
+public class AppAvailabilityInfoInner {
+    /**
+     * The value which indicates whether the provided name is available.
+     */
+    @JsonProperty(value = "nameAvailable", access = JsonProperty.Access.WRITE_ONLY)
+    private Boolean nameAvailable;
+
+    /**
+     * The reason for unavailability.
+     */
+    @JsonProperty(value = "reason", access = JsonProperty.Access.WRITE_ONLY)
+    private String reason;
+
+    /**
+     * The detailed reason message.
+     */
+    @JsonProperty(value = "message", access = JsonProperty.Access.WRITE_ONLY)
+    private String message;
+
+    /**
+     * Get the value which indicates whether the provided name is available.
+     *
+     * @return the nameAvailable value
+     */
+    public Boolean nameAvailable() {
+        return this.nameAvailable;
+    }
+
+    /**
+     * Get the reason for unavailability.
+     *
+     * @return the reason value
+     */
+    public String reason() {
+        return this.reason;
+    }
+
+    /**
+     * Get the detailed reason message.
+     *
+     * @return the message value
+     */
+    public String message() {
+        return this.message;
+    }
+
+}
diff --git a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/implementation/AppsImpl.java b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/implementation/AppsImpl.java
index f231df1b0456..f30c81656e96 100644
--- a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/implementation/AppsImpl.java
+++ b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/implementation/AppsImpl.java
@@ -22,7 +22,9 @@
 import rx.functions.Func1;
 import com.microsoft.azure.PagedList;
 import com.microsoft.azure.Page;
-import com.microsoft.azure.management.iotcentral.v2018_09_01.AppNameAvailabilityInfo;
+import com.microsoft.azure.management.iotcentral.v2018_09_01.AppAvailabilityInfo;
+import com.microsoft.azure.management.iotcentral.v2018_09_01.NameAvailabilityInputs;
+import com.microsoft.azure.management.iotcentral.v2018_09_01.SubdomainAvailabilityInputs;
 
 class AppsImpl extends GroupableResourcesCoreImpl<App, AppImpl, AppInner, AppsInner, IoTCentralManager>  implements Apps {
     protected AppsImpl(IoTCentralManager manager) {
@@ -127,13 +129,25 @@ public AppImpl define(String name) {
     }
 
     @Override
-    public Observable<AppNameAvailabilityInfo> checkNameAvailabilityAsync(String name) {
+    public Observable<AppAvailabilityInfo> checkNameAvailabilityAsync(NameAvailabilityInputs nameAvailabilityInputs) {
         AppsInner client = this.inner();
-        return client.checkNameAvailabilityAsync(name)
-        .map(new Func1<AppNameAvailabilityInfoInner, AppNameAvailabilityInfo>() {
+        return client.checkNameAvailabilityAsync(nameAvailabilityInputs)
+        .map(new Func1<AppAvailabilityInfoInner, AppAvailabilityInfo>() {
             @Override
-            public AppNameAvailabilityInfo call(AppNameAvailabilityInfoInner inner) {
-                return new AppNameAvailabilityInfoImpl(inner, manager());
+            public AppAvailabilityInfo call(AppAvailabilityInfoInner inner) {
+                return new AppAvailabilityInfoImpl(inner, manager());
+            }
+        });
+    }
+
+    @Override
+    public Observable<AppAvailabilityInfo> checkSubdomainAvailabilityAsync(SubdomainAvailabilityInputs subdomainAvailabilityInputs) {
+        AppsInner client = this.inner();
+        return client.checkSubdomainAvailabilityAsync(subdomainAvailabilityInputs)
+        .map(new Func1<AppAvailabilityInfoInner, AppAvailabilityInfo>() {
+            @Override
+            public AppAvailabilityInfo call(AppAvailabilityInfoInner inner) {
+                return new AppAvailabilityInfoImpl(inner, manager());
             }
         });
     }
diff --git a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/implementation/AppsInner.java b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/implementation/AppsInner.java
index b0572a838565..3f4f1638523b 100644
--- a/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/implementation/AppsInner.java
+++ b/iotcentral/resource-manager/v2018_09_01/src/main/java/com/microsoft/azure/management/iotcentral/v2018_09_01/implementation/AppsInner.java
@@ -17,7 +17,8 @@
 import com.microsoft.azure.ListOperationCallback;
 import com.microsoft.azure.management.iotcentral.v2018_09_01.AppPatch;
 import com.microsoft.azure.management.iotcentral.v2018_09_01.ErrorDetailsException;
-import com.microsoft.azure.management.iotcentral.v2018_09_01.OperationInputs;
+import com.microsoft.azure.management.iotcentral.v2018_09_01.NameAvailabilityInputs;
+import com.microsoft.azure.management.iotcentral.v2018_09_01.SubdomainAvailabilityInputs;
 import com.microsoft.azure.Page;
 import com.microsoft.azure.PagedList;
 import com.microsoft.rest.ServiceCallback;
@@ -106,7 +107,11 @@ interface AppsService {
 
         @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.iotcentral.v2018_09_01.Apps checkNameAvailability" })
         @POST("subscriptions/{subscriptionId}/providers/Microsoft.IoTCentral/checkNameAvailability")
-        Observable<Response<ResponseBody>> checkNameAvailability(@Path("subscriptionId") String subscriptionId, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Body OperationInputs operationInputs, @Header("User-Agent") String userAgent);
+        Observable<Response<ResponseBody>> checkNameAvailability(@Path("subscriptionId") String subscriptionId, @Query("api-version") String apiVersion, @Body NameAvailabilityInputs nameAvailabilityInputs, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.iotcentral.v2018_09_01.Apps checkSubdomainAvailability" })
+        @POST("subscriptions/{subscriptionId}/providers/Microsoft.IoTCentral/checkSubdomainAvailability")
+        Observable<Response<ResponseBody>> checkSubdomainAvailability(@Path("subscriptionId") String subscriptionId, @Query("api-version") String apiVersion, @Body SubdomainAvailabilityInputs subdomainAvailabilityInputs, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
 
         @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.iotcentral.v2018_09_01.Apps listNext" })
         @GET
@@ -929,39 +934,39 @@ private ServiceResponse<PageImpl<AppInner>> listByResourceGroupDelegate(Response
     /**
      * Check if an IoT Central application name is available.
      *
-     * @param name The name of the IoT Central application instance to check.
+     * @param nameAvailabilityInputs Set the name parameter in the NameAvailabilityInputs structure to the name of the IoT Central application to check.
      * @throws IllegalArgumentException thrown if parameters fail the validation
      * @throws ErrorDetailsException thrown if the request is rejected by server
      * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
-     * @return the AppNameAvailabilityInfoInner object if successful.
+     * @return the AppAvailabilityInfoInner object if successful.
      */
-    public AppNameAvailabilityInfoInner checkNameAvailability(String name) {
-        return checkNameAvailabilityWithServiceResponseAsync(name).toBlocking().single().body();
+    public AppAvailabilityInfoInner checkNameAvailability(NameAvailabilityInputs nameAvailabilityInputs) {
+        return checkNameAvailabilityWithServiceResponseAsync(nameAvailabilityInputs).toBlocking().single().body();
     }
 
     /**
      * Check if an IoT Central application name is available.
      *
-     * @param name The name of the IoT Central application instance to check.
+     * @param nameAvailabilityInputs Set the name parameter in the NameAvailabilityInputs structure to the name of the IoT Central application to check.
      * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
      * @throws IllegalArgumentException thrown if parameters fail the validation
      * @return the {@link ServiceFuture} object
      */
-    public ServiceFuture<AppNameAvailabilityInfoInner> checkNameAvailabilityAsync(String name, final ServiceCallback<AppNameAvailabilityInfoInner> serviceCallback) {
-        return ServiceFuture.fromResponse(checkNameAvailabilityWithServiceResponseAsync(name), serviceCallback);
+    public ServiceFuture<AppAvailabilityInfoInner> checkNameAvailabilityAsync(NameAvailabilityInputs nameAvailabilityInputs, final ServiceCallback<AppAvailabilityInfoInner> serviceCallback) {
+        return ServiceFuture.fromResponse(checkNameAvailabilityWithServiceResponseAsync(nameAvailabilityInputs), serviceCallback);
     }
 
     /**
      * Check if an IoT Central application name is available.
      *
-     * @param name The name of the IoT Central application instance to check.
+     * @param nameAvailabilityInputs Set the name parameter in the NameAvailabilityInputs structure to the name of the IoT Central application to check.
      * @throws IllegalArgumentException thrown if parameters fail the validation
-     * @return the observable to the AppNameAvailabilityInfoInner object
+     * @return the observable to the AppAvailabilityInfoInner object
      */
-    public Observable<AppNameAvailabilityInfoInner> checkNameAvailabilityAsync(String name) {
-        return checkNameAvailabilityWithServiceResponseAsync(name).map(new Func1<ServiceResponse<AppNameAvailabilityInfoInner>, AppNameAvailabilityInfoInner>() {
+    public Observable<AppAvailabilityInfoInner> checkNameAvailabilityAsync(NameAvailabilityInputs nameAvailabilityInputs) {
+        return checkNameAvailabilityWithServiceResponseAsync(nameAvailabilityInputs).map(new Func1<ServiceResponse<AppAvailabilityInfoInner>, AppAvailabilityInfoInner>() {
             @Override
-            public AppNameAvailabilityInfoInner call(ServiceResponse<AppNameAvailabilityInfoInner> response) {
+            public AppAvailabilityInfoInner call(ServiceResponse<AppAvailabilityInfoInner> response) {
                 return response.body();
             }
         });
@@ -970,28 +975,107 @@ public AppNameAvailabilityInfoInner call(ServiceResponse<AppNameAvailabilityInfo
     /**
      * Check if an IoT Central application name is available.
      *
-     * @param name The name of the IoT Central application instance to check.
+     * @param nameAvailabilityInputs Set the name parameter in the NameAvailabilityInputs structure to the name of the IoT Central application to check.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the AppAvailabilityInfoInner object
+     */
+    public Observable<ServiceResponse<AppAvailabilityInfoInner>> checkNameAvailabilityWithServiceResponseAsync(NameAvailabilityInputs nameAvailabilityInputs) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        if (nameAvailabilityInputs == null) {
+            throw new IllegalArgumentException("Parameter nameAvailabilityInputs is required and cannot be null.");
+        }
+        Validator.validate(nameAvailabilityInputs);
+        return service.checkNameAvailability(this.client.subscriptionId(), this.client.apiVersion(), nameAvailabilityInputs, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<AppAvailabilityInfoInner>>>() {
+                @Override
+                public Observable<ServiceResponse<AppAvailabilityInfoInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<AppAvailabilityInfoInner> clientResponse = checkNameAvailabilityDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<AppAvailabilityInfoInner> checkNameAvailabilityDelegate(Response<ResponseBody> response) throws ErrorDetailsException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<AppAvailabilityInfoInner, ErrorDetailsException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<AppAvailabilityInfoInner>() { }.getType())
+                .registerError(ErrorDetailsException.class)
+                .build(response);
+    }
+
+    /**
+     * Check if an IoT Central application subdomain is available.
+     *
+     * @param subdomainAvailabilityInputs Set the subdomain parameter in the SubdomainAvailabilityInputs structure to the subdomain of the IoT Central application to check.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws ErrorDetailsException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the AppAvailabilityInfoInner object if successful.
+     */
+    public AppAvailabilityInfoInner checkSubdomainAvailability(SubdomainAvailabilityInputs subdomainAvailabilityInputs) {
+        return checkSubdomainAvailabilityWithServiceResponseAsync(subdomainAvailabilityInputs).toBlocking().single().body();
+    }
+
+    /**
+     * Check if an IoT Central application subdomain is available.
+     *
+     * @param subdomainAvailabilityInputs Set the subdomain parameter in the SubdomainAvailabilityInputs structure to the subdomain of the IoT Central application to check.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<AppAvailabilityInfoInner> checkSubdomainAvailabilityAsync(SubdomainAvailabilityInputs subdomainAvailabilityInputs, final ServiceCallback<AppAvailabilityInfoInner> serviceCallback) {
+        return ServiceFuture.fromResponse(checkSubdomainAvailabilityWithServiceResponseAsync(subdomainAvailabilityInputs), serviceCallback);
+    }
+
+    /**
+     * Check if an IoT Central application subdomain is available.
+     *
+     * @param subdomainAvailabilityInputs Set the subdomain parameter in the SubdomainAvailabilityInputs structure to the subdomain of the IoT Central application to check.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the AppAvailabilityInfoInner object
+     */
+    public Observable<AppAvailabilityInfoInner> checkSubdomainAvailabilityAsync(SubdomainAvailabilityInputs subdomainAvailabilityInputs) {
+        return checkSubdomainAvailabilityWithServiceResponseAsync(subdomainAvailabilityInputs).map(new Func1<ServiceResponse<AppAvailabilityInfoInner>, AppAvailabilityInfoInner>() {
+            @Override
+            public AppAvailabilityInfoInner call(ServiceResponse<AppAvailabilityInfoInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Check if an IoT Central application subdomain is available.
+     *
+     * @param subdomainAvailabilityInputs Set the subdomain parameter in the SubdomainAvailabilityInputs structure to the subdomain of the IoT Central application to check.
      * @throws IllegalArgumentException thrown if parameters fail the validation
-     * @return the observable to the AppNameAvailabilityInfoInner object
+     * @return the observable to the AppAvailabilityInfoInner object
      */
-    public Observable<ServiceResponse<AppNameAvailabilityInfoInner>> checkNameAvailabilityWithServiceResponseAsync(String name) {
+    public Observable<ServiceResponse<AppAvailabilityInfoInner>> checkSubdomainAvailabilityWithServiceResponseAsync(SubdomainAvailabilityInputs subdomainAvailabilityInputs) {
         if (this.client.subscriptionId() == null) {
             throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
         }
         if (this.client.apiVersion() == null) {
             throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
         }
-        if (name == null) {
-            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        if (subdomainAvailabilityInputs == null) {
+            throw new IllegalArgumentException("Parameter subdomainAvailabilityInputs is required and cannot be null.");
         }
-        OperationInputs operationInputs = new OperationInputs();
-        operationInputs.withName(name);
-        return service.checkNameAvailability(this.client.subscriptionId(), this.client.apiVersion(), this.client.acceptLanguage(), operationInputs, this.client.userAgent())
-            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<AppNameAvailabilityInfoInner>>>() {
+        Validator.validate(subdomainAvailabilityInputs);
+        return service.checkSubdomainAvailability(this.client.subscriptionId(), this.client.apiVersion(), subdomainAvailabilityInputs, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<AppAvailabilityInfoInner>>>() {
                 @Override
-                public Observable<ServiceResponse<AppNameAvailabilityInfoInner>> call(Response<ResponseBody> response) {
+                public Observable<ServiceResponse<AppAvailabilityInfoInner>> call(Response<ResponseBody> response) {
                     try {
-                        ServiceResponse<AppNameAvailabilityInfoInner> clientResponse = checkNameAvailabilityDelegate(response);
+                        ServiceResponse<AppAvailabilityInfoInner> clientResponse = checkSubdomainAvailabilityDelegate(response);
                         return Observable.just(clientResponse);
                     } catch (Throwable t) {
                         return Observable.error(t);
@@ -1000,9 +1084,9 @@ public Observable<ServiceResponse<AppNameAvailabilityInfoInner>> call(Response<R
             });
     }
 
-    private ServiceResponse<AppNameAvailabilityInfoInner> checkNameAvailabilityDelegate(Response<ResponseBody> response) throws ErrorDetailsException, IOException, IllegalArgumentException {
-        return this.client.restClient().responseBuilderFactory().<AppNameAvailabilityInfoInner, ErrorDetailsException>newInstance(this.client.serializerAdapter())
-                .register(200, new TypeToken<AppNameAvailabilityInfoInner>() { }.getType())
+    private ServiceResponse<AppAvailabilityInfoInner> checkSubdomainAvailabilityDelegate(Response<ResponseBody> response) throws ErrorDetailsException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<AppAvailabilityInfoInner, ErrorDetailsException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<AppAvailabilityInfoInner>() { }.getType())
                 .registerError(ErrorDetailsException.class)
                 .build(response);
     }