diff --git a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/__init__.py b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/__init__.py
index fb0d40dcf547..ca9687b83717 100644
--- a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/__init__.py
+++ b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/__init__.py
@@ -96,6 +96,7 @@
     from ._models_py3 import SourceUploadDefinition
     from ._models_py3 import Status
     from ._models_py3 import StorageAccountProperties
+    from ._models_py3 import SystemData
     from ._models_py3 import Target
     from ._models_py3 import Task
     from ._models_py3 import TaskRun
@@ -207,6 +208,7 @@
     from ._models import SourceUploadDefinition
     from ._models import Status
     from ._models import StorageAccountProperties
+    from ._models import SystemData
     from ._models import Target
     from ._models import Task
     from ._models import TaskRun
@@ -255,6 +257,7 @@
     RegistryUsageUnit,
     WebhookStatus,
     WebhookAction,
+    CreatedByType,
     OS,
     RunStatus,
     RunType,
@@ -363,6 +366,7 @@
     'SourceUploadDefinition',
     'Status',
     'StorageAccountProperties',
+    'SystemData',
     'Target',
     'Task',
     'TaskRun',
@@ -410,6 +414,7 @@
     'RegistryUsageUnit',
     'WebhookStatus',
     'WebhookAction',
+    'CreatedByType',
     'OS',
     'RunStatus',
     'RunType',
diff --git a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/_container_registry_management_client_enums.py b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/_container_registry_management_client_enums.py
index 63e6bb6d8314..ea1d2d4fa737 100644
--- a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/_container_registry_management_client_enums.py
+++ b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/_container_registry_management_client_enums.py
@@ -93,6 +93,14 @@ class WebhookAction(str, Enum):
     chart_delete = "chart_delete"
 
 
+class CreatedByType(str, Enum):
+
+    user = "User"
+    application = "Application"
+    managed_identity = "ManagedIdentity"
+    key = "Key"
+
+
 class OS(str, Enum):
 
     windows = "Windows"
diff --git a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/_models.py b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/_models.py
index 08121387aa0a..cb80236131e3 100644
--- a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/_models.py
+++ b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/_models.py
@@ -75,6 +75,10 @@ class Resource(Model):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.SystemData
     """
 
     _validation = {
@@ -82,6 +86,7 @@ class Resource(Model):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
     }
 
     _attribute_map = {
@@ -90,6 +95,7 @@ class Resource(Model):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
     }
 
     def __init__(self, **kwargs):
@@ -99,6 +105,7 @@ def __init__(self, **kwargs):
         self.type = None
         self.location = kwargs.get('location', None)
         self.tags = kwargs.get('tags', None)
+        self.system_data = None
 
 
 class AgentPool(Resource):
@@ -121,6 +128,10 @@ class AgentPool(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.SystemData
     :param count: The count of agent machine
     :type count: int
     :param tier: The Tier of agent machine
@@ -144,6 +155,7 @@ class AgentPool(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
     }
 
@@ -153,6 +165,7 @@ class AgentPool(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'count': {'key': 'properties.count', 'type': 'int'},
         'tier': {'key': 'properties.tier', 'type': 'str'},
         'os': {'key': 'properties.os', 'type': 'str'},
@@ -2168,6 +2181,10 @@ class Registry(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.SystemData
     :param sku: Required. The SKU of the container registry.
     :type sku: ~azure.mgmt.containerregistry.v2019_06_01_preview.models.Sku
     :ivar login_server: The URL that can be used to log into the container
@@ -2205,6 +2222,7 @@ class Registry(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'sku': {'required': True},
         'login_server': {'readonly': True},
         'creation_date': {'readonly': True},
@@ -2218,6 +2236,7 @@ class Registry(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'sku': {'key': 'sku', 'type': 'Sku'},
         'login_server': {'key': 'properties.loginServer', 'type': 'str'},
         'creation_date': {'key': 'properties.creationDate', 'type': 'iso-8601'},
@@ -2446,6 +2465,10 @@ class Replication(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.SystemData
     :ivar provisioning_state: The provisioning state of the replication at the
      time the operation was called. Possible values include: 'Creating',
      'Updating', 'Deleting', 'Succeeded', 'Failed', 'Canceled'
@@ -2462,6 +2485,7 @@ class Replication(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
         'status': {'readonly': True},
     }
@@ -2472,6 +2496,7 @@ class Replication(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'provisioning_state': {'key': 'properties.provisioningState', 'type': 'str'},
         'status': {'key': 'properties.status', 'type': 'Status'},
     }
@@ -3294,6 +3319,48 @@ def __init__(self, **kwargs):
         self.id = kwargs.get('id', None)
 
 
+class SystemData(Model):
+    """Metadata pertaining to creation and last modification of the resource.
+
+    :param created_by: The identity that created the resource.
+    :type created_by: str
+    :param created_by_type: The type of identity that created the resource.
+     Possible values include: 'User', 'Application', 'ManagedIdentity', 'Key'
+    :type created_by_type: str or
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.CreatedByType
+    :param created_at: The timestamp of resource creation (UTC).
+    :type created_at: datetime
+    :param last_modified_by: The identity that last modified the resource.
+    :type last_modified_by: str
+    :param last_modified_by_type: The type of identity that last modified the
+     resource. Possible values include: 'User', 'Application',
+     'ManagedIdentity', 'Key'
+    :type last_modified_by_type: str or
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.CreatedByType
+    :param last_modified_at: The type of identity that last modified the
+     resource.
+    :type last_modified_at: datetime
+    """
+
+    _attribute_map = {
+        'created_by': {'key': 'createdBy', 'type': 'str'},
+        'created_by_type': {'key': 'createdByType', 'type': 'str'},
+        'created_at': {'key': 'createdAt', 'type': 'iso-8601'},
+        'last_modified_by': {'key': 'lastModifiedBy', 'type': 'str'},
+        'last_modified_by_type': {'key': 'lastModifiedByType', 'type': 'str'},
+        'last_modified_at': {'key': 'lastModifiedAt', 'type': 'iso-8601'},
+    }
+
+    def __init__(self, **kwargs):
+        super(SystemData, self).__init__(**kwargs)
+        self.created_by = kwargs.get('created_by', None)
+        self.created_by_type = kwargs.get('created_by_type', None)
+        self.created_at = kwargs.get('created_at', None)
+        self.last_modified_by = kwargs.get('last_modified_by', None)
+        self.last_modified_by_type = kwargs.get('last_modified_by_type', None)
+        self.last_modified_at = kwargs.get('last_modified_at', None)
+
+
 class Target(Model):
     """The target of the event.
 
@@ -3363,6 +3430,10 @@ class Task(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.SystemData
     :param identity: Identity for the resource.
     :type identity:
      ~azure.mgmt.containerregistry.v2019_06_01_preview.models.IdentityProperties
@@ -3405,6 +3476,7 @@ class Task(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
         'creation_date': {'readonly': True},
         'platform': {'required': True},
@@ -3418,6 +3490,7 @@ class Task(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'identity': {'key': 'identity', 'type': 'IdentityProperties'},
         'provisioning_state': {'key': 'properties.provisioningState', 'type': 'str'},
         'creation_date': {'key': 'properties.creationDate', 'type': 'iso-8601'},
@@ -3466,6 +3539,10 @@ class TaskRun(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.SystemData
     :param identity: Identity for the resource.
     :type identity:
      ~azure.mgmt.containerregistry.v2019_06_01_preview.models.IdentityProperties
@@ -3490,6 +3567,7 @@ class TaskRun(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
         'run_result': {'readonly': True},
     }
@@ -3500,6 +3578,7 @@ class TaskRun(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'identity': {'key': 'identity', 'type': 'IdentityProperties'},
         'provisioning_state': {'key': 'properties.provisioningState', 'type': 'str'},
         'run_request': {'key': 'properties.runRequest', 'type': 'RunRequest'},
@@ -4070,6 +4149,10 @@ class Webhook(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.SystemData
     :param status: The status of the webhook at the time the operation was
      called. Possible values include: 'enabled', 'disabled'
     :type status: str or
@@ -4095,6 +4178,7 @@ class Webhook(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'actions': {'required': True},
         'provisioning_state': {'readonly': True},
     }
@@ -4105,6 +4189,7 @@ class Webhook(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'status': {'key': 'properties.status', 'type': 'str'},
         'scope': {'key': 'properties.scope', 'type': 'str'},
         'actions': {'key': 'properties.actions', 'type': '[str]'},
diff --git a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/_models_py3.py b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/_models_py3.py
index 8f7d952288d1..164669ad462d 100644
--- a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/_models_py3.py
+++ b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_06_01_preview/models/_models_py3.py
@@ -75,6 +75,10 @@ class Resource(Model):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.SystemData
     """
 
     _validation = {
@@ -82,6 +86,7 @@ class Resource(Model):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
     }
 
     _attribute_map = {
@@ -90,6 +95,7 @@ class Resource(Model):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
     }
 
     def __init__(self, *, location: str, tags=None, **kwargs) -> None:
@@ -99,6 +105,7 @@ def __init__(self, *, location: str, tags=None, **kwargs) -> None:
         self.type = None
         self.location = location
         self.tags = tags
+        self.system_data = None
 
 
 class AgentPool(Resource):
@@ -121,6 +128,10 @@ class AgentPool(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.SystemData
     :param count: The count of agent machine
     :type count: int
     :param tier: The Tier of agent machine
@@ -144,6 +155,7 @@ class AgentPool(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
     }
 
@@ -153,6 +165,7 @@ class AgentPool(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'count': {'key': 'properties.count', 'type': 'int'},
         'tier': {'key': 'properties.tier', 'type': 'str'},
         'os': {'key': 'properties.os', 'type': 'str'},
@@ -2168,6 +2181,10 @@ class Registry(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.SystemData
     :param sku: Required. The SKU of the container registry.
     :type sku: ~azure.mgmt.containerregistry.v2019_06_01_preview.models.Sku
     :ivar login_server: The URL that can be used to log into the container
@@ -2205,6 +2222,7 @@ class Registry(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'sku': {'required': True},
         'login_server': {'readonly': True},
         'creation_date': {'readonly': True},
@@ -2218,6 +2236,7 @@ class Registry(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'sku': {'key': 'sku', 'type': 'Sku'},
         'login_server': {'key': 'properties.loginServer', 'type': 'str'},
         'creation_date': {'key': 'properties.creationDate', 'type': 'iso-8601'},
@@ -2446,6 +2465,10 @@ class Replication(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.SystemData
     :ivar provisioning_state: The provisioning state of the replication at the
      time the operation was called. Possible values include: 'Creating',
      'Updating', 'Deleting', 'Succeeded', 'Failed', 'Canceled'
@@ -2462,6 +2485,7 @@ class Replication(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
         'status': {'readonly': True},
     }
@@ -2472,6 +2496,7 @@ class Replication(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'provisioning_state': {'key': 'properties.provisioningState', 'type': 'str'},
         'status': {'key': 'properties.status', 'type': 'Status'},
     }
@@ -3294,6 +3319,48 @@ def __init__(self, *, id: str, **kwargs) -> None:
         self.id = id
 
 
+class SystemData(Model):
+    """Metadata pertaining to creation and last modification of the resource.
+
+    :param created_by: The identity that created the resource.
+    :type created_by: str
+    :param created_by_type: The type of identity that created the resource.
+     Possible values include: 'User', 'Application', 'ManagedIdentity', 'Key'
+    :type created_by_type: str or
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.CreatedByType
+    :param created_at: The timestamp of resource creation (UTC).
+    :type created_at: datetime
+    :param last_modified_by: The identity that last modified the resource.
+    :type last_modified_by: str
+    :param last_modified_by_type: The type of identity that last modified the
+     resource. Possible values include: 'User', 'Application',
+     'ManagedIdentity', 'Key'
+    :type last_modified_by_type: str or
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.CreatedByType
+    :param last_modified_at: The type of identity that last modified the
+     resource.
+    :type last_modified_at: datetime
+    """
+
+    _attribute_map = {
+        'created_by': {'key': 'createdBy', 'type': 'str'},
+        'created_by_type': {'key': 'createdByType', 'type': 'str'},
+        'created_at': {'key': 'createdAt', 'type': 'iso-8601'},
+        'last_modified_by': {'key': 'lastModifiedBy', 'type': 'str'},
+        'last_modified_by_type': {'key': 'lastModifiedByType', 'type': 'str'},
+        'last_modified_at': {'key': 'lastModifiedAt', 'type': 'iso-8601'},
+    }
+
+    def __init__(self, *, created_by: str=None, created_by_type=None, created_at=None, last_modified_by: str=None, last_modified_by_type=None, last_modified_at=None, **kwargs) -> None:
+        super(SystemData, self).__init__(**kwargs)
+        self.created_by = created_by
+        self.created_by_type = created_by_type
+        self.created_at = created_at
+        self.last_modified_by = last_modified_by
+        self.last_modified_by_type = last_modified_by_type
+        self.last_modified_at = last_modified_at
+
+
 class Target(Model):
     """The target of the event.
 
@@ -3363,6 +3430,10 @@ class Task(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.SystemData
     :param identity: Identity for the resource.
     :type identity:
      ~azure.mgmt.containerregistry.v2019_06_01_preview.models.IdentityProperties
@@ -3405,6 +3476,7 @@ class Task(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
         'creation_date': {'readonly': True},
         'platform': {'required': True},
@@ -3418,6 +3490,7 @@ class Task(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'identity': {'key': 'identity', 'type': 'IdentityProperties'},
         'provisioning_state': {'key': 'properties.provisioningState', 'type': 'str'},
         'creation_date': {'key': 'properties.creationDate', 'type': 'iso-8601'},
@@ -3466,6 +3539,10 @@ class TaskRun(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.SystemData
     :param identity: Identity for the resource.
     :type identity:
      ~azure.mgmt.containerregistry.v2019_06_01_preview.models.IdentityProperties
@@ -3490,6 +3567,7 @@ class TaskRun(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
         'run_result': {'readonly': True},
     }
@@ -3500,6 +3578,7 @@ class TaskRun(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'identity': {'key': 'identity', 'type': 'IdentityProperties'},
         'provisioning_state': {'key': 'properties.provisioningState', 'type': 'str'},
         'run_request': {'key': 'properties.runRequest', 'type': 'RunRequest'},
@@ -4070,6 +4149,10 @@ class Webhook(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_06_01_preview.models.SystemData
     :param status: The status of the webhook at the time the operation was
      called. Possible values include: 'enabled', 'disabled'
     :type status: str or
@@ -4095,6 +4178,7 @@ class Webhook(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'actions': {'required': True},
         'provisioning_state': {'readonly': True},
     }
@@ -4105,6 +4189,7 @@ class Webhook(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'status': {'key': 'properties.status', 'type': 'str'},
         'scope': {'key': 'properties.scope', 'type': 'str'},
         'actions': {'key': 'properties.actions', 'type': '[str]'},
diff --git a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/__init__.py b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/__init__.py
index 4ffe02bc13cd..94f9e7af79ed 100644
--- a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/__init__.py
+++ b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/__init__.py
@@ -116,6 +116,7 @@
     from ._models_py3 import SourceUploadDefinition
     from ._models_py3 import Status
     from ._models_py3 import StorageAccountProperties
+    from ._models_py3 import SystemData
     from ._models_py3 import Target
     from ._models_py3 import Task
     from ._models_py3 import TaskRun
@@ -247,6 +248,7 @@
     from ._models import SourceUploadDefinition
     from ._models import Status
     from ._models import StorageAccountProperties
+    from ._models import SystemData
     from ._models import Target
     from ._models import Task
     from ._models import TaskRun
@@ -310,6 +312,7 @@
     RegistryUsageUnit,
     WebhookStatus,
     WebhookAction,
+    CreatedByType,
     OS,
     RunStatus,
     RunType,
@@ -436,6 +439,7 @@
     'SourceUploadDefinition',
     'Status',
     'StorageAccountProperties',
+    'SystemData',
     'Target',
     'Task',
     'TaskRun',
@@ -498,6 +502,7 @@
     'RegistryUsageUnit',
     'WebhookStatus',
     'WebhookAction',
+    'CreatedByType',
     'OS',
     'RunStatus',
     'RunType',
diff --git a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/_container_registry_management_client_enums.py b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/_container_registry_management_client_enums.py
index 0b364845701d..22ed146927f9 100644
--- a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/_container_registry_management_client_enums.py
+++ b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/_container_registry_management_client_enums.py
@@ -156,6 +156,14 @@ class WebhookAction(str, Enum):
     chart_delete = "chart_delete"
 
 
+class CreatedByType(str, Enum):
+
+    user = "User"
+    application = "Application"
+    managed_identity = "ManagedIdentity"
+    key = "Key"
+
+
 class OS(str, Enum):
 
     windows = "Windows"
diff --git a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/_models.py b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/_models.py
index 4c5cd5fc0c82..498004baf5df 100644
--- a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/_models.py
+++ b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/_models.py
@@ -75,6 +75,10 @@ class Resource(Model):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.SystemData
     """
 
     _validation = {
@@ -82,6 +86,7 @@ class Resource(Model):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
     }
 
     _attribute_map = {
@@ -90,6 +95,7 @@ class Resource(Model):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
     }
 
     def __init__(self, **kwargs):
@@ -99,6 +105,7 @@ def __init__(self, **kwargs):
         self.type = None
         self.location = kwargs.get('location', None)
         self.tags = kwargs.get('tags', None)
+        self.system_data = None
 
 
 class AgentPool(Resource):
@@ -121,6 +128,10 @@ class AgentPool(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.SystemData
     :param count: The count of agent machine
     :type count: int
     :param tier: The Tier of agent machine
@@ -144,6 +155,7 @@ class AgentPool(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
     }
 
@@ -153,6 +165,7 @@ class AgentPool(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'count': {'key': 'properties.count', 'type': 'int'},
         'tier': {'key': 'properties.tier', 'type': 'str'},
         'os': {'key': 'properties.os', 'type': 'str'},
@@ -2843,6 +2856,10 @@ class Registry(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.SystemData
     :param sku: Required. The SKU of the container registry.
     :type sku: ~azure.mgmt.containerregistry.v2019_12_01_preview.models.Sku
     :param identity: The identity of the container registry.
@@ -2901,6 +2918,7 @@ class Registry(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'sku': {'required': True},
         'login_server': {'readonly': True},
         'creation_date': {'readonly': True},
@@ -2916,6 +2934,7 @@ class Registry(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'sku': {'key': 'sku', 'type': 'Sku'},
         'identity': {'key': 'identity', 'type': 'IdentityProperties'},
         'login_server': {'key': 'properties.loginServer', 'type': 'str'},
@@ -3178,6 +3197,10 @@ class Replication(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.SystemData
     :ivar provisioning_state: The provisioning state of the replication at the
      time the operation was called. Possible values include: 'Creating',
      'Updating', 'Deleting', 'Succeeded', 'Failed', 'Canceled'
@@ -3199,6 +3222,7 @@ class Replication(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
         'status': {'readonly': True},
     }
@@ -3209,6 +3233,7 @@ class Replication(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'provisioning_state': {'key': 'properties.provisioningState', 'type': 'str'},
         'status': {'key': 'properties.status', 'type': 'Status'},
         'region_endpoint_enabled': {'key': 'properties.regionEndpointEnabled', 'type': 'bool'},
@@ -4040,6 +4065,48 @@ def __init__(self, **kwargs):
         self.id = kwargs.get('id', None)
 
 
+class SystemData(Model):
+    """Metadata pertaining to creation and last modification of the resource.
+
+    :param created_by: The identity that created the resource.
+    :type created_by: str
+    :param created_by_type: The type of identity that created the resource.
+     Possible values include: 'User', 'Application', 'ManagedIdentity', 'Key'
+    :type created_by_type: str or
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.CreatedByType
+    :param created_at: The timestamp of resource creation (UTC).
+    :type created_at: datetime
+    :param last_modified_by: The identity that last modified the resource.
+    :type last_modified_by: str
+    :param last_modified_by_type: The type of identity that last modified the
+     resource. Possible values include: 'User', 'Application',
+     'ManagedIdentity', 'Key'
+    :type last_modified_by_type: str or
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.CreatedByType
+    :param last_modified_at: The type of identity that last modified the
+     resource.
+    :type last_modified_at: datetime
+    """
+
+    _attribute_map = {
+        'created_by': {'key': 'createdBy', 'type': 'str'},
+        'created_by_type': {'key': 'createdByType', 'type': 'str'},
+        'created_at': {'key': 'createdAt', 'type': 'iso-8601'},
+        'last_modified_by': {'key': 'lastModifiedBy', 'type': 'str'},
+        'last_modified_by_type': {'key': 'lastModifiedByType', 'type': 'str'},
+        'last_modified_at': {'key': 'lastModifiedAt', 'type': 'iso-8601'},
+    }
+
+    def __init__(self, **kwargs):
+        super(SystemData, self).__init__(**kwargs)
+        self.created_by = kwargs.get('created_by', None)
+        self.created_by_type = kwargs.get('created_by_type', None)
+        self.created_at = kwargs.get('created_at', None)
+        self.last_modified_by = kwargs.get('last_modified_by', None)
+        self.last_modified_by_type = kwargs.get('last_modified_by_type', None)
+        self.last_modified_at = kwargs.get('last_modified_at', None)
+
+
 class Target(Model):
     """The target of the event.
 
@@ -4109,6 +4176,10 @@ class Task(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.SystemData
     :param identity: Identity for the resource.
     :type identity:
      ~azure.mgmt.containerregistry.v2019_12_01_preview.models.IdentityProperties
@@ -4151,6 +4222,7 @@ class Task(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
         'creation_date': {'readonly': True},
         'platform': {'required': True},
@@ -4164,6 +4236,7 @@ class Task(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'identity': {'key': 'identity', 'type': 'IdentityProperties'},
         'provisioning_state': {'key': 'properties.provisioningState', 'type': 'str'},
         'creation_date': {'key': 'properties.creationDate', 'type': 'iso-8601'},
@@ -4212,6 +4285,10 @@ class TaskRun(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.SystemData
     :param identity: Identity for the resource.
     :type identity:
      ~azure.mgmt.containerregistry.v2019_12_01_preview.models.IdentityProperties
@@ -4236,6 +4313,7 @@ class TaskRun(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
         'run_result': {'readonly': True},
     }
@@ -4246,6 +4324,7 @@ class TaskRun(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'identity': {'key': 'identity', 'type': 'IdentityProperties'},
         'provisioning_state': {'key': 'properties.provisioningState', 'type': 'str'},
         'run_request': {'key': 'properties.runRequest', 'type': 'RunRequest'},
@@ -4816,6 +4895,10 @@ class Webhook(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.SystemData
     :param status: The status of the webhook at the time the operation was
      called. Possible values include: 'enabled', 'disabled'
     :type status: str or
@@ -4841,6 +4924,7 @@ class Webhook(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'actions': {'required': True},
         'provisioning_state': {'readonly': True},
     }
@@ -4851,6 +4935,7 @@ class Webhook(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'status': {'key': 'properties.status', 'type': 'str'},
         'scope': {'key': 'properties.scope', 'type': 'str'},
         'actions': {'key': 'properties.actions', 'type': '[str]'},
diff --git a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/_models_py3.py b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/_models_py3.py
index e7513de90501..f94a0add15b8 100644
--- a/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/_models_py3.py
+++ b/sdk/containerregistry/azure-mgmt-containerregistry/azure/mgmt/containerregistry/v2019_12_01_preview/models/_models_py3.py
@@ -75,6 +75,10 @@ class Resource(Model):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.SystemData
     """
 
     _validation = {
@@ -82,6 +86,7 @@ class Resource(Model):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
     }
 
     _attribute_map = {
@@ -90,6 +95,7 @@ class Resource(Model):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
     }
 
     def __init__(self, *, location: str, tags=None, **kwargs) -> None:
@@ -99,6 +105,7 @@ def __init__(self, *, location: str, tags=None, **kwargs) -> None:
         self.type = None
         self.location = location
         self.tags = tags
+        self.system_data = None
 
 
 class AgentPool(Resource):
@@ -121,6 +128,10 @@ class AgentPool(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.SystemData
     :param count: The count of agent machine
     :type count: int
     :param tier: The Tier of agent machine
@@ -144,6 +155,7 @@ class AgentPool(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
     }
 
@@ -153,6 +165,7 @@ class AgentPool(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'count': {'key': 'properties.count', 'type': 'int'},
         'tier': {'key': 'properties.tier', 'type': 'str'},
         'os': {'key': 'properties.os', 'type': 'str'},
@@ -2843,6 +2856,10 @@ class Registry(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.SystemData
     :param sku: Required. The SKU of the container registry.
     :type sku: ~azure.mgmt.containerregistry.v2019_12_01_preview.models.Sku
     :param identity: The identity of the container registry.
@@ -2901,6 +2918,7 @@ class Registry(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'sku': {'required': True},
         'login_server': {'readonly': True},
         'creation_date': {'readonly': True},
@@ -2916,6 +2934,7 @@ class Registry(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'sku': {'key': 'sku', 'type': 'Sku'},
         'identity': {'key': 'identity', 'type': 'IdentityProperties'},
         'login_server': {'key': 'properties.loginServer', 'type': 'str'},
@@ -3178,6 +3197,10 @@ class Replication(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.SystemData
     :ivar provisioning_state: The provisioning state of the replication at the
      time the operation was called. Possible values include: 'Creating',
      'Updating', 'Deleting', 'Succeeded', 'Failed', 'Canceled'
@@ -3199,6 +3222,7 @@ class Replication(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
         'status': {'readonly': True},
     }
@@ -3209,6 +3233,7 @@ class Replication(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'provisioning_state': {'key': 'properties.provisioningState', 'type': 'str'},
         'status': {'key': 'properties.status', 'type': 'Status'},
         'region_endpoint_enabled': {'key': 'properties.regionEndpointEnabled', 'type': 'bool'},
@@ -4040,6 +4065,48 @@ def __init__(self, *, id: str, **kwargs) -> None:
         self.id = id
 
 
+class SystemData(Model):
+    """Metadata pertaining to creation and last modification of the resource.
+
+    :param created_by: The identity that created the resource.
+    :type created_by: str
+    :param created_by_type: The type of identity that created the resource.
+     Possible values include: 'User', 'Application', 'ManagedIdentity', 'Key'
+    :type created_by_type: str or
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.CreatedByType
+    :param created_at: The timestamp of resource creation (UTC).
+    :type created_at: datetime
+    :param last_modified_by: The identity that last modified the resource.
+    :type last_modified_by: str
+    :param last_modified_by_type: The type of identity that last modified the
+     resource. Possible values include: 'User', 'Application',
+     'ManagedIdentity', 'Key'
+    :type last_modified_by_type: str or
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.CreatedByType
+    :param last_modified_at: The type of identity that last modified the
+     resource.
+    :type last_modified_at: datetime
+    """
+
+    _attribute_map = {
+        'created_by': {'key': 'createdBy', 'type': 'str'},
+        'created_by_type': {'key': 'createdByType', 'type': 'str'},
+        'created_at': {'key': 'createdAt', 'type': 'iso-8601'},
+        'last_modified_by': {'key': 'lastModifiedBy', 'type': 'str'},
+        'last_modified_by_type': {'key': 'lastModifiedByType', 'type': 'str'},
+        'last_modified_at': {'key': 'lastModifiedAt', 'type': 'iso-8601'},
+    }
+
+    def __init__(self, *, created_by: str=None, created_by_type=None, created_at=None, last_modified_by: str=None, last_modified_by_type=None, last_modified_at=None, **kwargs) -> None:
+        super(SystemData, self).__init__(**kwargs)
+        self.created_by = created_by
+        self.created_by_type = created_by_type
+        self.created_at = created_at
+        self.last_modified_by = last_modified_by
+        self.last_modified_by_type = last_modified_by_type
+        self.last_modified_at = last_modified_at
+
+
 class Target(Model):
     """The target of the event.
 
@@ -4109,6 +4176,10 @@ class Task(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.SystemData
     :param identity: Identity for the resource.
     :type identity:
      ~azure.mgmt.containerregistry.v2019_12_01_preview.models.IdentityProperties
@@ -4151,6 +4222,7 @@ class Task(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
         'creation_date': {'readonly': True},
         'platform': {'required': True},
@@ -4164,6 +4236,7 @@ class Task(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'identity': {'key': 'identity', 'type': 'IdentityProperties'},
         'provisioning_state': {'key': 'properties.provisioningState', 'type': 'str'},
         'creation_date': {'key': 'properties.creationDate', 'type': 'iso-8601'},
@@ -4212,6 +4285,10 @@ class TaskRun(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.SystemData
     :param identity: Identity for the resource.
     :type identity:
      ~azure.mgmt.containerregistry.v2019_12_01_preview.models.IdentityProperties
@@ -4236,6 +4313,7 @@ class TaskRun(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'provisioning_state': {'readonly': True},
         'run_result': {'readonly': True},
     }
@@ -4246,6 +4324,7 @@ class TaskRun(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'identity': {'key': 'identity', 'type': 'IdentityProperties'},
         'provisioning_state': {'key': 'properties.provisioningState', 'type': 'str'},
         'run_request': {'key': 'properties.runRequest', 'type': 'RunRequest'},
@@ -4816,6 +4895,10 @@ class Webhook(Resource):
     :type location: str
     :param tags: The tags of the resource.
     :type tags: dict[str, str]
+    :ivar system_data: Metadata pertaining to creation and last modification
+     of the resource.
+    :vartype system_data:
+     ~azure.mgmt.containerregistry.v2019_12_01_preview.models.SystemData
     :param status: The status of the webhook at the time the operation was
      called. Possible values include: 'enabled', 'disabled'
     :type status: str or
@@ -4841,6 +4924,7 @@ class Webhook(Resource):
         'name': {'readonly': True},
         'type': {'readonly': True},
         'location': {'required': True},
+        'system_data': {'readonly': True},
         'actions': {'required': True},
         'provisioning_state': {'readonly': True},
     }
@@ -4851,6 +4935,7 @@ class Webhook(Resource):
         'type': {'key': 'type', 'type': 'str'},
         'location': {'key': 'location', 'type': 'str'},
         'tags': {'key': 'tags', 'type': '{str}'},
+        'system_data': {'key': 'systemData', 'type': 'SystemData'},
         'status': {'key': 'properties.status', 'type': 'str'},
         'scope': {'key': 'properties.scope', 'type': 'str'},
         'actions': {'key': 'properties.actions', 'type': '[str]'},