From db563534f422ceec6477c91da881019e3b865da3 Mon Sep 17 00:00:00 2001
From: SDKAuto <sdkautomation@microsoft.com>
Date: Tue, 6 Jul 2021 01:26:55 +0000
Subject: [PATCH] CodeGen from PR 14894 in Azure/azure-rest-api-specs [Iothub]
 Adding new properties in IothubProperties [stable version: 2021-07-01]
 (#14894)

* Adds base for updating Microsoft.Devices from version stable/2021-03-31 to version 2021-07-01

* Updates readme

* Updates API version in new specs and examples

* adding new properties in iothu properties

* Adding isVerified property in preview version

* validation fixes
---
 .../iothub/mgmt/2016-02-03/devices/CHANGELOG.md  | 11 +----------
 .../iothub/mgmt/2016-02-03/devices/_meta.json    |  2 +-
 .../mgmt/2016-02-03/devices/iothubresource.go    |  3 ++-
 .../iothub/mgmt/2017-01-19/devices/CHANGELOG.md  | 11 +----------
 .../iothub/mgmt/2017-01-19/devices/_meta.json    |  2 +-
 .../mgmt/2017-01-19/devices/iothubresource.go    |  3 ++-
 .../iothub/mgmt/2017-07-01/devices/CHANGELOG.md  | 15 +--------------
 .../iothub/mgmt/2017-07-01/devices/_meta.json    |  2 +-
 .../mgmt/2017-07-01/devices/iothubresource.go    |  3 ++-
 .../iothub/mgmt/2018-01-22/devices/CHANGELOG.md  | 15 +--------------
 .../iothub/mgmt/2018-01-22/devices/_meta.json    |  2 +-
 .../mgmt/2018-01-22/devices/iothubresource.go    |  3 ++-
 .../iothub/mgmt/2018-04-01/devices/CHANGELOG.md  | 14 +-------------
 .../iothub/mgmt/2018-04-01/devices/_meta.json    |  2 +-
 .../mgmt/2018-04-01/devices/iothubresource.go    |  3 ++-
 .../iothub/mgmt/2020-03-01/devices/CHANGELOG.md  | 15 +--------------
 .../iothub/mgmt/2020-03-01/devices/_meta.json    |  2 +-
 .../mgmt/2020-03-01/devices/iothubresource.go    |  3 ++-
 .../mgmt/2018-12-01-preview/devices/CHANGELOG.md | 14 +-------------
 .../mgmt/2018-12-01-preview/devices/_meta.json   |  2 +-
 .../2018-12-01-preview/devices/iothubresource.go |  3 ++-
 .../mgmt/2019-03-22-preview/devices/CHANGELOG.md | 14 +-------------
 .../mgmt/2019-03-22-preview/devices/_meta.json   |  2 +-
 .../2019-03-22-preview/devices/iothubresource.go |  3 ++-
 .../mgmt/2019-07-01-preview/devices/CHANGELOG.md | 14 +-------------
 .../mgmt/2019-07-01-preview/devices/_meta.json   |  2 +-
 .../2019-07-01-preview/devices/iothubresource.go |  3 ++-
 .../mgmt/2021-03-03-preview/devices/CHANGELOG.md | 16 +---------------
 .../mgmt/2021-03-03-preview/devices/_meta.json   |  2 +-
 29 files changed, 38 insertions(+), 148 deletions(-)

diff --git a/services/iothub/mgmt/2016-02-03/devices/CHANGELOG.md b/services/iothub/mgmt/2016-02-03/devices/CHANGELOG.md
index ef3e28ff55b3..a1ecf841edb0 100644
--- a/services/iothub/mgmt/2016-02-03/devices/CHANGELOG.md
+++ b/services/iothub/mgmt/2016-02-03/devices/CHANGELOG.md
@@ -1,11 +1,2 @@
-# Change History
+# Unreleased
 
-## Additive Changes
-
-### New Funcs
-
-1. ErrorDetails.MarshalJSON() ([]byte, error)
-1. IotHubCapacity.MarshalJSON() ([]byte, error)
-1. IotHubQuotaMetricInfo.MarshalJSON() ([]byte, error)
-1. JobResponse.MarshalJSON() ([]byte, error)
-1. RegistryStatistics.MarshalJSON() ([]byte, error)
diff --git a/services/iothub/mgmt/2016-02-03/devices/_meta.json b/services/iothub/mgmt/2016-02-03/devices/_meta.json
index d87435822221..6677156913ac 100644
--- a/services/iothub/mgmt/2016-02-03/devices/_meta.json
+++ b/services/iothub/mgmt/2016-02-03/devices/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "3c764635e7d442b3e74caf593029fcd440b3ef82",
+  "commit": "0ea99445abcb5b6b77133272069a7dbd4db0d568",
   "readme": "/_/azure-rest-api-specs/specification/iothub/resource-manager/readme.md",
   "tag": "package-2016-02",
   "use": "@microsoft.azure/autorest.go@2.1.183",
diff --git a/services/iothub/mgmt/2016-02-03/devices/iothubresource.go b/services/iothub/mgmt/2016-02-03/devices/iothubresource.go
index a4fb76ae0ec2..a96c13d303f5 100644
--- a/services/iothub/mgmt/2016-02-03/devices/iothubresource.go
+++ b/services/iothub/mgmt/2016-02-03/devices/iothubresource.go
@@ -195,7 +195,8 @@ func (client IotHubResourceClient) CreateEventHubConsumerGroupResponder(resp *ht
 
 // CreateOrUpdate create or update the metadata of an Iot hub. The usual pattern to modify a property is to retrieve
 // the IoT hub metadata and security metadata, and then combine them with the modified values in a new body to update
-// the IoT hub.
+// the IoT hub. If certain properties are missing in the JSON, updating IoT Hub may cause these values to fallback to
+// default, which may lead to unexpected behavior.
 // Parameters:
 // resourceGroupName - the name of the resource group that contains the IoT hub.
 // resourceName - the name of the IoT hub to create or update.
diff --git a/services/iothub/mgmt/2017-01-19/devices/CHANGELOG.md b/services/iothub/mgmt/2017-01-19/devices/CHANGELOG.md
index ef3e28ff55b3..a1ecf841edb0 100644
--- a/services/iothub/mgmt/2017-01-19/devices/CHANGELOG.md
+++ b/services/iothub/mgmt/2017-01-19/devices/CHANGELOG.md
@@ -1,11 +1,2 @@
-# Change History
+# Unreleased
 
-## Additive Changes
-
-### New Funcs
-
-1. ErrorDetails.MarshalJSON() ([]byte, error)
-1. IotHubCapacity.MarshalJSON() ([]byte, error)
-1. IotHubQuotaMetricInfo.MarshalJSON() ([]byte, error)
-1. JobResponse.MarshalJSON() ([]byte, error)
-1. RegistryStatistics.MarshalJSON() ([]byte, error)
diff --git a/services/iothub/mgmt/2017-01-19/devices/_meta.json b/services/iothub/mgmt/2017-01-19/devices/_meta.json
index 60e1ca735be3..93e13cc87510 100644
--- a/services/iothub/mgmt/2017-01-19/devices/_meta.json
+++ b/services/iothub/mgmt/2017-01-19/devices/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "3c764635e7d442b3e74caf593029fcd440b3ef82",
+  "commit": "0ea99445abcb5b6b77133272069a7dbd4db0d568",
   "readme": "/_/azure-rest-api-specs/specification/iothub/resource-manager/readme.md",
   "tag": "package-2017-01",
   "use": "@microsoft.azure/autorest.go@2.1.183",
diff --git a/services/iothub/mgmt/2017-01-19/devices/iothubresource.go b/services/iothub/mgmt/2017-01-19/devices/iothubresource.go
index f0d64387f476..c30eba7bbb7d 100644
--- a/services/iothub/mgmt/2017-01-19/devices/iothubresource.go
+++ b/services/iothub/mgmt/2017-01-19/devices/iothubresource.go
@@ -195,7 +195,8 @@ func (client IotHubResourceClient) CreateEventHubConsumerGroupResponder(resp *ht
 
 // CreateOrUpdate create or update the metadata of an Iot hub. The usual pattern to modify a property is to retrieve
 // the IoT hub metadata and security metadata, and then combine them with the modified values in a new body to update
-// the IoT hub.
+// the IoT hub. If certain properties are missing in the JSON, updating IoT Hub may cause these values to fallback to
+// default, which may lead to unexpected behavior.
 // Parameters:
 // resourceGroupName - the name of the resource group that contains the IoT hub.
 // resourceName - the name of the IoT hub to create or update.
diff --git a/services/iothub/mgmt/2017-07-01/devices/CHANGELOG.md b/services/iothub/mgmt/2017-07-01/devices/CHANGELOG.md
index 17a82c7c5246..a1ecf841edb0 100644
--- a/services/iothub/mgmt/2017-07-01/devices/CHANGELOG.md
+++ b/services/iothub/mgmt/2017-07-01/devices/CHANGELOG.md
@@ -1,15 +1,2 @@
-# Change History
+# Unreleased
 
-## Additive Changes
-
-### New Funcs
-
-1. CertificateProperties.MarshalJSON() ([]byte, error)
-1. CertificatePropertiesWithNonce.MarshalJSON() ([]byte, error)
-1. ErrorDetails.MarshalJSON() ([]byte, error)
-1. IotHubCapacity.MarshalJSON() ([]byte, error)
-1. IotHubQuotaMetricInfo.MarshalJSON() ([]byte, error)
-1. JobResponse.MarshalJSON() ([]byte, error)
-1. OperationDisplay.MarshalJSON() ([]byte, error)
-1. OperationListResult.MarshalJSON() ([]byte, error)
-1. RegistryStatistics.MarshalJSON() ([]byte, error)
diff --git a/services/iothub/mgmt/2017-07-01/devices/_meta.json b/services/iothub/mgmt/2017-07-01/devices/_meta.json
index ce76bce8ab10..3f7181b325f7 100644
--- a/services/iothub/mgmt/2017-07-01/devices/_meta.json
+++ b/services/iothub/mgmt/2017-07-01/devices/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "3c764635e7d442b3e74caf593029fcd440b3ef82",
+  "commit": "0ea99445abcb5b6b77133272069a7dbd4db0d568",
   "readme": "/_/azure-rest-api-specs/specification/iothub/resource-manager/readme.md",
   "tag": "package-2017-07",
   "use": "@microsoft.azure/autorest.go@2.1.183",
diff --git a/services/iothub/mgmt/2017-07-01/devices/iothubresource.go b/services/iothub/mgmt/2017-07-01/devices/iothubresource.go
index 865cf7260844..88e463017c3f 100644
--- a/services/iothub/mgmt/2017-07-01/devices/iothubresource.go
+++ b/services/iothub/mgmt/2017-07-01/devices/iothubresource.go
@@ -195,7 +195,8 @@ func (client IotHubResourceClient) CreateEventHubConsumerGroupResponder(resp *ht
 
 // CreateOrUpdate create or update the metadata of an Iot hub. The usual pattern to modify a property is to retrieve
 // the IoT hub metadata and security metadata, and then combine them with the modified values in a new body to update
-// the IoT hub.
+// the IoT hub. If certain properties are missing in the JSON, updating IoT Hub may cause these values to fallback to
+// default, which may lead to unexpected behavior.
 // Parameters:
 // resourceGroupName - the name of the resource group that contains the IoT hub.
 // resourceName - the name of the IoT hub.
diff --git a/services/iothub/mgmt/2018-01-22/devices/CHANGELOG.md b/services/iothub/mgmt/2018-01-22/devices/CHANGELOG.md
index 17a82c7c5246..a1ecf841edb0 100644
--- a/services/iothub/mgmt/2018-01-22/devices/CHANGELOG.md
+++ b/services/iothub/mgmt/2018-01-22/devices/CHANGELOG.md
@@ -1,15 +1,2 @@
-# Change History
+# Unreleased
 
-## Additive Changes
-
-### New Funcs
-
-1. CertificateProperties.MarshalJSON() ([]byte, error)
-1. CertificatePropertiesWithNonce.MarshalJSON() ([]byte, error)
-1. ErrorDetails.MarshalJSON() ([]byte, error)
-1. IotHubCapacity.MarshalJSON() ([]byte, error)
-1. IotHubQuotaMetricInfo.MarshalJSON() ([]byte, error)
-1. JobResponse.MarshalJSON() ([]byte, error)
-1. OperationDisplay.MarshalJSON() ([]byte, error)
-1. OperationListResult.MarshalJSON() ([]byte, error)
-1. RegistryStatistics.MarshalJSON() ([]byte, error)
diff --git a/services/iothub/mgmt/2018-01-22/devices/_meta.json b/services/iothub/mgmt/2018-01-22/devices/_meta.json
index 2efdfcb1f792..162c503ee81d 100644
--- a/services/iothub/mgmt/2018-01-22/devices/_meta.json
+++ b/services/iothub/mgmt/2018-01-22/devices/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "3c764635e7d442b3e74caf593029fcd440b3ef82",
+  "commit": "0ea99445abcb5b6b77133272069a7dbd4db0d568",
   "readme": "/_/azure-rest-api-specs/specification/iothub/resource-manager/readme.md",
   "tag": "package-2018-01",
   "use": "@microsoft.azure/autorest.go@2.1.183",
diff --git a/services/iothub/mgmt/2018-01-22/devices/iothubresource.go b/services/iothub/mgmt/2018-01-22/devices/iothubresource.go
index 2f569866adff..35b4b6d820e9 100644
--- a/services/iothub/mgmt/2018-01-22/devices/iothubresource.go
+++ b/services/iothub/mgmt/2018-01-22/devices/iothubresource.go
@@ -195,7 +195,8 @@ func (client IotHubResourceClient) CreateEventHubConsumerGroupResponder(resp *ht
 
 // CreateOrUpdate create or update the metadata of an Iot hub. The usual pattern to modify a property is to retrieve
 // the IoT hub metadata and security metadata, and then combine them with the modified values in a new body to update
-// the IoT hub.
+// the IoT hub. If certain properties are missing in the JSON, updating IoT Hub may cause these values to fallback to
+// default, which may lead to unexpected behavior.
 // Parameters:
 // resourceGroupName - the name of the resource group that contains the IoT hub.
 // resourceName - the name of the IoT hub.
diff --git a/services/iothub/mgmt/2018-04-01/devices/CHANGELOG.md b/services/iothub/mgmt/2018-04-01/devices/CHANGELOG.md
index 1ef15e7e7f4e..a1ecf841edb0 100644
--- a/services/iothub/mgmt/2018-04-01/devices/CHANGELOG.md
+++ b/services/iothub/mgmt/2018-04-01/devices/CHANGELOG.md
@@ -1,14 +1,2 @@
-# Change History
+# Unreleased
 
-## Additive Changes
-
-### New Funcs
-
-1. CertificatePropertiesWithNonce.MarshalJSON() ([]byte, error)
-1. ErrorDetails.MarshalJSON() ([]byte, error)
-1. IotHubCapacity.MarshalJSON() ([]byte, error)
-1. IotHubQuotaMetricInfo.MarshalJSON() ([]byte, error)
-1. JobResponse.MarshalJSON() ([]byte, error)
-1. OperationDisplay.MarshalJSON() ([]byte, error)
-1. OperationListResult.MarshalJSON() ([]byte, error)
-1. RegistryStatistics.MarshalJSON() ([]byte, error)
diff --git a/services/iothub/mgmt/2018-04-01/devices/_meta.json b/services/iothub/mgmt/2018-04-01/devices/_meta.json
index 308fc190f7b1..cba8089c268e 100644
--- a/services/iothub/mgmt/2018-04-01/devices/_meta.json
+++ b/services/iothub/mgmt/2018-04-01/devices/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "3c764635e7d442b3e74caf593029fcd440b3ef82",
+  "commit": "0ea99445abcb5b6b77133272069a7dbd4db0d568",
   "readme": "/_/azure-rest-api-specs/specification/iothub/resource-manager/readme.md",
   "tag": "package-2018-04",
   "use": "@microsoft.azure/autorest.go@2.1.183",
diff --git a/services/iothub/mgmt/2018-04-01/devices/iothubresource.go b/services/iothub/mgmt/2018-04-01/devices/iothubresource.go
index 2248609384b0..612642b2181d 100644
--- a/services/iothub/mgmt/2018-04-01/devices/iothubresource.go
+++ b/services/iothub/mgmt/2018-04-01/devices/iothubresource.go
@@ -195,7 +195,8 @@ func (client IotHubResourceClient) CreateEventHubConsumerGroupResponder(resp *ht
 
 // CreateOrUpdate create or update the metadata of an Iot hub. The usual pattern to modify a property is to retrieve
 // the IoT hub metadata and security metadata, and then combine them with the modified values in a new body to update
-// the IoT hub.
+// the IoT hub. If certain properties are missing in the JSON, updating IoT Hub may cause these values to fallback to
+// default, which may lead to unexpected behavior.
 // Parameters:
 // resourceGroupName - the name of the resource group that contains the IoT hub.
 // resourceName - the name of the IoT hub.
diff --git a/services/iothub/mgmt/2020-03-01/devices/CHANGELOG.md b/services/iothub/mgmt/2020-03-01/devices/CHANGELOG.md
index 354b026d5d2d..a1ecf841edb0 100644
--- a/services/iothub/mgmt/2020-03-01/devices/CHANGELOG.md
+++ b/services/iothub/mgmt/2020-03-01/devices/CHANGELOG.md
@@ -1,15 +1,2 @@
-# Change History
+# Unreleased
 
-## Additive Changes
-
-### New Funcs
-
-1. CertificatePropertiesWithNonce.MarshalJSON() ([]byte, error)
-1. ErrorDetails.MarshalJSON() ([]byte, error)
-1. IotHubCapacity.MarshalJSON() ([]byte, error)
-1. IotHubQuotaMetricInfo.MarshalJSON() ([]byte, error)
-1. JobResponse.MarshalJSON() ([]byte, error)
-1. OperationDisplay.MarshalJSON() ([]byte, error)
-1. OperationListResult.MarshalJSON() ([]byte, error)
-1. PrivateEndpoint.MarshalJSON() ([]byte, error)
-1. RegistryStatistics.MarshalJSON() ([]byte, error)
diff --git a/services/iothub/mgmt/2020-03-01/devices/_meta.json b/services/iothub/mgmt/2020-03-01/devices/_meta.json
index 79bca89e87f0..d836c571a85e 100644
--- a/services/iothub/mgmt/2020-03-01/devices/_meta.json
+++ b/services/iothub/mgmt/2020-03-01/devices/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "3c764635e7d442b3e74caf593029fcd440b3ef82",
+  "commit": "0ea99445abcb5b6b77133272069a7dbd4db0d568",
   "readme": "/_/azure-rest-api-specs/specification/iothub/resource-manager/readme.md",
   "tag": "package-2020-03",
   "use": "@microsoft.azure/autorest.go@2.1.183",
diff --git a/services/iothub/mgmt/2020-03-01/devices/iothubresource.go b/services/iothub/mgmt/2020-03-01/devices/iothubresource.go
index 5e86f16de46d..6ae13416d519 100644
--- a/services/iothub/mgmt/2020-03-01/devices/iothubresource.go
+++ b/services/iothub/mgmt/2020-03-01/devices/iothubresource.go
@@ -195,7 +195,8 @@ func (client IotHubResourceClient) CreateEventHubConsumerGroupResponder(resp *ht
 
 // CreateOrUpdate create or update the metadata of an Iot hub. The usual pattern to modify a property is to retrieve
 // the IoT hub metadata and security metadata, and then combine them with the modified values in a new body to update
-// the IoT hub.
+// the IoT hub. If certain properties are missing in the JSON, updating IoT Hub may cause these values to fallback to
+// default, which may lead to unexpected behavior.
 // Parameters:
 // resourceGroupName - the name of the resource group that contains the IoT hub.
 // resourceName - the name of the IoT hub.
diff --git a/services/preview/iothub/mgmt/2018-12-01-preview/devices/CHANGELOG.md b/services/preview/iothub/mgmt/2018-12-01-preview/devices/CHANGELOG.md
index 1ef15e7e7f4e..a1ecf841edb0 100644
--- a/services/preview/iothub/mgmt/2018-12-01-preview/devices/CHANGELOG.md
+++ b/services/preview/iothub/mgmt/2018-12-01-preview/devices/CHANGELOG.md
@@ -1,14 +1,2 @@
-# Change History
+# Unreleased
 
-## Additive Changes
-
-### New Funcs
-
-1. CertificatePropertiesWithNonce.MarshalJSON() ([]byte, error)
-1. ErrorDetails.MarshalJSON() ([]byte, error)
-1. IotHubCapacity.MarshalJSON() ([]byte, error)
-1. IotHubQuotaMetricInfo.MarshalJSON() ([]byte, error)
-1. JobResponse.MarshalJSON() ([]byte, error)
-1. OperationDisplay.MarshalJSON() ([]byte, error)
-1. OperationListResult.MarshalJSON() ([]byte, error)
-1. RegistryStatistics.MarshalJSON() ([]byte, error)
diff --git a/services/preview/iothub/mgmt/2018-12-01-preview/devices/_meta.json b/services/preview/iothub/mgmt/2018-12-01-preview/devices/_meta.json
index ad48d9e19abf..1b32061813d0 100644
--- a/services/preview/iothub/mgmt/2018-12-01-preview/devices/_meta.json
+++ b/services/preview/iothub/mgmt/2018-12-01-preview/devices/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "3c764635e7d442b3e74caf593029fcd440b3ef82",
+  "commit": "0ea99445abcb5b6b77133272069a7dbd4db0d568",
   "readme": "/_/azure-rest-api-specs/specification/iothub/resource-manager/readme.md",
   "tag": "package-2018-12-preview",
   "use": "@microsoft.azure/autorest.go@2.1.183",
diff --git a/services/preview/iothub/mgmt/2018-12-01-preview/devices/iothubresource.go b/services/preview/iothub/mgmt/2018-12-01-preview/devices/iothubresource.go
index 395486359be3..05df5baea91a 100644
--- a/services/preview/iothub/mgmt/2018-12-01-preview/devices/iothubresource.go
+++ b/services/preview/iothub/mgmt/2018-12-01-preview/devices/iothubresource.go
@@ -195,7 +195,8 @@ func (client IotHubResourceClient) CreateEventHubConsumerGroupResponder(resp *ht
 
 // CreateOrUpdate create or update the metadata of an Iot hub. The usual pattern to modify a property is to retrieve
 // the IoT hub metadata and security metadata, and then combine them with the modified values in a new body to update
-// the IoT hub.
+// the IoT hub. If certain properties are missing in the JSON, updating IoT Hub may cause these values to fallback to
+// default, which may lead to unexpected behavior.
 // Parameters:
 // resourceGroupName - the name of the resource group that contains the IoT hub.
 // resourceName - the name of the IoT hub.
diff --git a/services/preview/iothub/mgmt/2019-03-22-preview/devices/CHANGELOG.md b/services/preview/iothub/mgmt/2019-03-22-preview/devices/CHANGELOG.md
index 1ef15e7e7f4e..a1ecf841edb0 100644
--- a/services/preview/iothub/mgmt/2019-03-22-preview/devices/CHANGELOG.md
+++ b/services/preview/iothub/mgmt/2019-03-22-preview/devices/CHANGELOG.md
@@ -1,14 +1,2 @@
-# Change History
+# Unreleased
 
-## Additive Changes
-
-### New Funcs
-
-1. CertificatePropertiesWithNonce.MarshalJSON() ([]byte, error)
-1. ErrorDetails.MarshalJSON() ([]byte, error)
-1. IotHubCapacity.MarshalJSON() ([]byte, error)
-1. IotHubQuotaMetricInfo.MarshalJSON() ([]byte, error)
-1. JobResponse.MarshalJSON() ([]byte, error)
-1. OperationDisplay.MarshalJSON() ([]byte, error)
-1. OperationListResult.MarshalJSON() ([]byte, error)
-1. RegistryStatistics.MarshalJSON() ([]byte, error)
diff --git a/services/preview/iothub/mgmt/2019-03-22-preview/devices/_meta.json b/services/preview/iothub/mgmt/2019-03-22-preview/devices/_meta.json
index 8df86fdbea06..c5c85f66d4d0 100644
--- a/services/preview/iothub/mgmt/2019-03-22-preview/devices/_meta.json
+++ b/services/preview/iothub/mgmt/2019-03-22-preview/devices/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "3c764635e7d442b3e74caf593029fcd440b3ef82",
+  "commit": "0ea99445abcb5b6b77133272069a7dbd4db0d568",
   "readme": "/_/azure-rest-api-specs/specification/iothub/resource-manager/readme.md",
   "tag": "package-preview-2019-03",
   "use": "@microsoft.azure/autorest.go@2.1.183",
diff --git a/services/preview/iothub/mgmt/2019-03-22-preview/devices/iothubresource.go b/services/preview/iothub/mgmt/2019-03-22-preview/devices/iothubresource.go
index f8a8d4ac2e33..296cc30d364d 100644
--- a/services/preview/iothub/mgmt/2019-03-22-preview/devices/iothubresource.go
+++ b/services/preview/iothub/mgmt/2019-03-22-preview/devices/iothubresource.go
@@ -195,7 +195,8 @@ func (client IotHubResourceClient) CreateEventHubConsumerGroupResponder(resp *ht
 
 // CreateOrUpdate create or update the metadata of an Iot hub. The usual pattern to modify a property is to retrieve
 // the IoT hub metadata and security metadata, and then combine them with the modified values in a new body to update
-// the IoT hub.
+// the IoT hub. If certain properties are missing in the JSON, updating IoT Hub may cause these values to fallback to
+// default, which may lead to unexpected behavior.
 // Parameters:
 // resourceGroupName - the name of the resource group that contains the IoT hub.
 // resourceName - the name of the IoT hub.
diff --git a/services/preview/iothub/mgmt/2019-07-01-preview/devices/CHANGELOG.md b/services/preview/iothub/mgmt/2019-07-01-preview/devices/CHANGELOG.md
index 1ef15e7e7f4e..a1ecf841edb0 100644
--- a/services/preview/iothub/mgmt/2019-07-01-preview/devices/CHANGELOG.md
+++ b/services/preview/iothub/mgmt/2019-07-01-preview/devices/CHANGELOG.md
@@ -1,14 +1,2 @@
-# Change History
+# Unreleased
 
-## Additive Changes
-
-### New Funcs
-
-1. CertificatePropertiesWithNonce.MarshalJSON() ([]byte, error)
-1. ErrorDetails.MarshalJSON() ([]byte, error)
-1. IotHubCapacity.MarshalJSON() ([]byte, error)
-1. IotHubQuotaMetricInfo.MarshalJSON() ([]byte, error)
-1. JobResponse.MarshalJSON() ([]byte, error)
-1. OperationDisplay.MarshalJSON() ([]byte, error)
-1. OperationListResult.MarshalJSON() ([]byte, error)
-1. RegistryStatistics.MarshalJSON() ([]byte, error)
diff --git a/services/preview/iothub/mgmt/2019-07-01-preview/devices/_meta.json b/services/preview/iothub/mgmt/2019-07-01-preview/devices/_meta.json
index 85e2350428bb..04dacb6bc054 100644
--- a/services/preview/iothub/mgmt/2019-07-01-preview/devices/_meta.json
+++ b/services/preview/iothub/mgmt/2019-07-01-preview/devices/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "8a3d2f1e61ac486406edc077f29060de8c02beea",
+  "commit": "0ea99445abcb5b6b77133272069a7dbd4db0d568",
   "readme": "/_/azure-rest-api-specs/specification/iothub/resource-manager/readme.md",
   "tag": "package-preview-2019-07",
   "use": "@microsoft.azure/autorest.go@2.1.183",
diff --git a/services/preview/iothub/mgmt/2019-07-01-preview/devices/iothubresource.go b/services/preview/iothub/mgmt/2019-07-01-preview/devices/iothubresource.go
index 4badca2abfc3..58f2d46009d7 100644
--- a/services/preview/iothub/mgmt/2019-07-01-preview/devices/iothubresource.go
+++ b/services/preview/iothub/mgmt/2019-07-01-preview/devices/iothubresource.go
@@ -195,7 +195,8 @@ func (client IotHubResourceClient) CreateEventHubConsumerGroupResponder(resp *ht
 
 // CreateOrUpdate create or update the metadata of an Iot hub. The usual pattern to modify a property is to retrieve
 // the IoT hub metadata and security metadata, and then combine them with the modified values in a new body to update
-// the IoT hub.
+// the IoT hub. If certain properties are missing in the JSON, updating IoT Hub may cause these values to fallback to
+// default, which may lead to unexpected behavior.
 // Parameters:
 // resourceGroupName - the name of the resource group that contains the IoT hub.
 // resourceName - the name of the IoT hub.
diff --git a/services/preview/iothub/mgmt/2021-03-03-preview/devices/CHANGELOG.md b/services/preview/iothub/mgmt/2021-03-03-preview/devices/CHANGELOG.md
index 7209a9c23cd7..a1ecf841edb0 100644
--- a/services/preview/iothub/mgmt/2021-03-03-preview/devices/CHANGELOG.md
+++ b/services/preview/iothub/mgmt/2021-03-03-preview/devices/CHANGELOG.md
@@ -1,16 +1,2 @@
-# Change History
+# Unreleased
 
-## Additive Changes
-
-### New Funcs
-
-1. ArmUserIdentity.MarshalJSON() ([]byte, error)
-1. CertificatePropertiesWithNonce.MarshalJSON() ([]byte, error)
-1. ErrorDetails.MarshalJSON() ([]byte, error)
-1. IotHubCapacity.MarshalJSON() ([]byte, error)
-1. IotHubQuotaMetricInfo.MarshalJSON() ([]byte, error)
-1. JobResponse.MarshalJSON() ([]byte, error)
-1. OperationDisplay.MarshalJSON() ([]byte, error)
-1. OperationListResult.MarshalJSON() ([]byte, error)
-1. PrivateEndpoint.MarshalJSON() ([]byte, error)
-1. RegistryStatistics.MarshalJSON() ([]byte, error)
diff --git a/services/preview/iothub/mgmt/2021-03-03-preview/devices/_meta.json b/services/preview/iothub/mgmt/2021-03-03-preview/devices/_meta.json
index 9563c711a1ad..32389079e50c 100644
--- a/services/preview/iothub/mgmt/2021-03-03-preview/devices/_meta.json
+++ b/services/preview/iothub/mgmt/2021-03-03-preview/devices/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "e5839301dfd424559851119c99ef0a2699fbd228",
+  "commit": "0ea99445abcb5b6b77133272069a7dbd4db0d568",
   "readme": "/_/azure-rest-api-specs/specification/iothub/resource-manager/readme.md",
   "tag": "package-preview-2021-03",
   "use": "@microsoft.azure/autorest.go@2.1.183",