IoTSiteWise / Client / create_asset_model
create_asset_model#
- IoTSiteWise.Client.create_asset_model(**kwargs)#
Creates an asset model from specified property and hierarchy definitions. You create assets from asset models. With asset models, you can easily create assets of the same type that have standardized definitions. Each asset created from a model inherits the asset model’s property and hierarchy definitions. For more information, see Defining asset models in the IoT SiteWise User Guide.
You can create two types of asset models,
ASSET_MODELorCOMPONENT_MODEL.ASSET_MODEL – (default) An asset model that you can use to create assets. Can’t be included as a component in another asset model.
COMPONENT_MODEL – A reusable component that you can include in the composite models of other asset models. You can’t create assets directly from this type of asset model.
See also: AWS API Documentation
Request Syntax
response = client.create_asset_model( assetModelName='string', assetModelType='ASSET_MODEL'|'COMPONENT_MODEL', assetModelId='string', assetModelExternalId='string', assetModelDescription='string', assetModelProperties=[ { 'id': 'string', 'externalId': 'string', 'name': 'string', 'dataType': 'STRING'|'INTEGER'|'DOUBLE'|'BOOLEAN'|'STRUCT', 'dataTypeSpec': 'string', 'unit': 'string', 'type': { 'attribute': { 'defaultValue': 'string' }, 'measurement': { 'processingConfig': { 'forwardingConfig': { 'state': 'DISABLED'|'ENABLED' } } }, 'transform': { 'expression': 'string', 'variables': [ { 'name': 'string', 'value': { 'propertyId': 'string', 'hierarchyId': 'string', 'propertyPath': [ { 'id': 'string', 'name': 'string' }, ] } }, ], 'processingConfig': { 'computeLocation': 'EDGE'|'CLOUD', 'forwardingConfig': { 'state': 'DISABLED'|'ENABLED' } } }, 'metric': { 'expression': 'string', 'variables': [ { 'name': 'string', 'value': { 'propertyId': 'string', 'hierarchyId': 'string', 'propertyPath': [ { 'id': 'string', 'name': 'string' }, ] } }, ], 'window': { 'tumbling': { 'interval': 'string', 'offset': 'string' } }, 'processingConfig': { 'computeLocation': 'EDGE'|'CLOUD' } } } }, ], assetModelHierarchies=[ { 'id': 'string', 'externalId': 'string', 'name': 'string', 'childAssetModelId': 'string' }, ], assetModelCompositeModels=[ { 'id': 'string', 'externalId': 'string', 'name': 'string', 'description': 'string', 'type': 'string', 'properties': [ { 'id': 'string', 'externalId': 'string', 'name': 'string', 'dataType': 'STRING'|'INTEGER'|'DOUBLE'|'BOOLEAN'|'STRUCT', 'dataTypeSpec': 'string', 'unit': 'string', 'type': { 'attribute': { 'defaultValue': 'string' }, 'measurement': { 'processingConfig': { 'forwardingConfig': { 'state': 'DISABLED'|'ENABLED' } } }, 'transform': { 'expression': 'string', 'variables': [ { 'name': 'string', 'value': { 'propertyId': 'string', 'hierarchyId': 'string', 'propertyPath': [ { 'id': 'string', 'name': 'string' }, ] } }, ], 'processingConfig': { 'computeLocation': 'EDGE'|'CLOUD', 'forwardingConfig': { 'state': 'DISABLED'|'ENABLED' } } }, 'metric': { 'expression': 'string', 'variables': [ { 'name': 'string', 'value': { 'propertyId': 'string', 'hierarchyId': 'string', 'propertyPath': [ { 'id': 'string', 'name': 'string' }, ] } }, ], 'window': { 'tumbling': { 'interval': 'string', 'offset': 'string' } }, 'processingConfig': { 'computeLocation': 'EDGE'|'CLOUD' } } } }, ] }, ], clientToken='string', tags={ 'string': 'string' } )
- Parameters:
assetModelName (string) –
[REQUIRED]
A unique name for the asset model.
assetModelType (string) –
The type of asset model.
ASSET_MODEL – (default) An asset model that you can use to create assets. Can’t be included as a component in another asset model.
COMPONENT_MODEL – A reusable component that you can include in the composite models of other asset models. You can’t create assets directly from this type of asset model.
assetModelId (string) – The ID to assign to the asset model, if desired. IoT SiteWise automatically generates a unique ID for you, so this parameter is never required. However, if you prefer to supply your own ID instead, you can specify it here in UUID format. If you specify your own ID, it must be globally unique.
assetModelExternalId (string) – An external ID to assign to the asset model. The external ID must be unique within your Amazon Web Services account. For more information, see Using external IDs in the IoT SiteWise User Guide.
assetModelDescription (string) – A description for the asset model.
assetModelProperties (list) –
The property definitions of the asset model. For more information, see Asset properties in the IoT SiteWise User Guide.
You can specify up to 200 properties per asset model. For more information, see Quotas in the IoT SiteWise User Guide.
(dict) –
Contains an asset model property definition. This property definition is applied to all assets created from the asset model.
id (string) –
The ID to assign to the asset model property, if desired. IoT SiteWise automatically generates a unique ID for you, so this parameter is never required. However, if you prefer to supply your own ID instead, you can specify it here in UUID format. If you specify your own ID, it must be globally unique.
externalId (string) –
An external ID to assign to the property definition. The external ID must be unique among property definitions within this asset model. For more information, see Using external IDs in the IoT SiteWise User Guide.
name (string) – [REQUIRED]
The name of the property definition.
dataType (string) – [REQUIRED]
The data type of the property definition.
If you specify
STRUCT, you must also specifydataTypeSpecto identify the type of the structure for this property.dataTypeSpec (string) –
The data type of the structure for this property. This parameter is required on properties that have the
STRUCTdata type.The options for this parameter depend on the type of the composite model in which you define this property. Use
AWS/ALARM_STATEfor alarm state in alarm composite models.unit (string) –
The unit of the property definition, such as
NewtonsorRPM.type (dict) – [REQUIRED]
The property definition type (see
PropertyType). You can only specify one type in a property definition.attribute (dict) –
Specifies an asset attribute property. An attribute generally contains static information, such as the serial number of an IIoT wind turbine.
defaultValue (string) –
The default value of the asset model property attribute. All assets that you create from the asset model contain this attribute value. You can update an attribute’s value after you create an asset. For more information, see Updating attribute values in the IoT SiteWise User Guide.
measurement (dict) –
Specifies an asset measurement property. A measurement represents a device’s raw sensor data stream, such as timestamped temperature values or timestamped power values.
processingConfig (dict) –
The processing configuration for the given measurement property. You can configure measurements to be kept at the edge or forwarded to the Amazon Web Services Cloud. By default, measurements are forwarded to the cloud.
forwardingConfig (dict) – [REQUIRED]
The forwarding configuration for the given measurement property.
state (string) – [REQUIRED]
The forwarding state for the given property.
transform (dict) –
Specifies an asset transform property. A transform contains a mathematical expression that maps a property’s data points from one form to another, such as a unit conversion from Celsius to Fahrenheit.
expression (string) – [REQUIRED]
The mathematical expression that defines the transformation function. You can specify up to 10 variables per expression. You can specify up to 10 functions per expression.
For more information, see Quotas in the IoT SiteWise User Guide.
variables (list) – [REQUIRED]
The list of variables used in the expression.
(dict) –
Contains expression variable information.
name (string) – [REQUIRED]
The friendly name of the variable to be used in the expression.
value (dict) – [REQUIRED]
The variable that identifies an asset property from which to use values.
propertyId (string) –
The ID of the property to use as the variable. You can use the property
nameif it’s from the same asset model. If the property has an external ID, you can specifyexternalId:followed by the external ID. For more information, see Using external IDs in the IoT SiteWise User Guide.hierarchyId (string) –
The ID of the hierarchy to query for the property ID. You can use the hierarchy’s name instead of the hierarchy’s ID. If the hierarchy has an external ID, you can specify
externalId:followed by the external ID. For more information, see Using external IDs in the IoT SiteWise User Guide.You use a hierarchy ID instead of a model ID because you can have several hierarchies using the same model and therefore the same
propertyId. For example, you might have separately grouped assets that come from the same asset model. For more information, see Asset hierarchies in the IoT SiteWise User Guide.propertyPath (list) –
The path of the property.
(dict) –
Represents one level between a property and the root of the asset model.
id (string) –
The ID of the path segment.
name (string) –
The name of the path segment.
processingConfig (dict) –
The processing configuration for the given transform property. You can configure transforms to be kept at the edge or forwarded to the Amazon Web Services Cloud. You can also configure transforms to be computed at the edge or in the cloud.
computeLocation (string) – [REQUIRED]
The compute location for the given transform property.
forwardingConfig (dict) –
The forwarding configuration for a given property.
state (string) – [REQUIRED]
The forwarding state for the given property.
metric (dict) –
Specifies an asset metric property. A metric contains a mathematical expression that uses aggregate functions to process all input data points over a time interval and output a single data point, such as to calculate the average hourly temperature.
expression (string) – [REQUIRED]
The mathematical expression that defines the metric aggregation function. You can specify up to 10 variables per expression. You can specify up to 10 functions per expression.
For more information, see Quotas in the IoT SiteWise User Guide.
variables (list) – [REQUIRED]
The list of variables used in the expression.
(dict) –
Contains expression variable information.
name (string) – [REQUIRED]
The friendly name of the variable to be used in the expression.
value (dict) – [REQUIRED]
The variable that identifies an asset property from which to use values.
propertyId (string) –
The ID of the property to use as the variable. You can use the property
nameif it’s from the same asset model. If the property has an external ID, you can specifyexternalId:followed by the external ID. For more information, see Using external IDs in the IoT SiteWise User Guide.hierarchyId (string) –
The ID of the hierarchy to query for the property ID. You can use the hierarchy’s name instead of the hierarchy’s ID. If the hierarchy has an external ID, you can specify
externalId:followed by the external ID. For more information, see Using external IDs in the IoT SiteWise User Guide.You use a hierarchy ID instead of a model ID because you can have several hierarchies using the same model and therefore the same
propertyId. For example, you might have separately grouped assets that come from the same asset model. For more information, see Asset hierarchies in the IoT SiteWise User Guide.propertyPath (list) –
The path of the property.
(dict) –
Represents one level between a property and the root of the asset model.
id (string) –
The ID of the path segment.
name (string) –
The name of the path segment.
window (dict) – [REQUIRED]
The window (time interval) over which IoT SiteWise computes the metric’s aggregation expression. IoT SiteWise computes one data point per
window.tumbling (dict) –
The tumbling time interval window.
interval (string) – [REQUIRED]
The time interval for the tumbling window. The interval time must be between 1 minute and 1 week.
IoT SiteWise computes the
1winterval the end of Sunday at midnight each week (UTC), the1dinterval at the end of each day at midnight (UTC), the1hinterval at the end of each hour, and so on.When IoT SiteWise aggregates data points for metric computations, the start of each interval is exclusive and the end of each interval is inclusive. IoT SiteWise places the computed data point at the end of the interval.
offset (string) –
The offset for the tumbling window. The
offsetparameter accepts the following:The offset time. For example, if you specify
18hforoffsetand1dforinterval, IoT SiteWise aggregates data in one of the following ways:If you create the metric before or at 6 PM (UTC), you get the first aggregation result at 6 PM (UTC) on the day when you create the metric.
If you create the metric after 6 PM (UTC), you get the first aggregation result at 6 PM (UTC) the next day.
The ISO 8601 format. For example, if you specify
PT18Hforoffsetand1dforinterval, IoT SiteWise aggregates data in one of the following ways:If you create the metric before or at 6 PM (UTC), you get the first aggregation result at 6 PM (UTC) on the day when you create the metric.
If you create the metric after 6 PM (UTC), you get the first aggregation result at 6 PM (UTC) the next day.
The 24-hour clock. For example, if you specify
00:03:00foroffset,5mforinterval, and you create the metric at 2 PM (UTC), you get the first aggregation result at 2:03 PM (UTC). You get the second aggregation result at 2:08 PM (UTC).The offset time zone. For example, if you specify
2021-07-23T18:00-08foroffsetand1dforinterval, IoT SiteWise aggregates data in one of the following ways:If you create the metric before or at 6 PM (PST), you get the first aggregation result at 6 PM (PST) on the day when you create the metric.
If you create the metric after 6 PM (PST), you get the first aggregation result at 6 PM (PST) the next day.
processingConfig (dict) –
The processing configuration for the given metric property. You can configure metrics to be computed at the edge or in the Amazon Web Services Cloud. By default, metrics are forwarded to the cloud.
computeLocation (string) – [REQUIRED]
The compute location for the given metric property.
assetModelHierarchies (list) –
The hierarchy definitions of the asset model. Each hierarchy specifies an asset model whose assets can be children of any other assets created from this asset model. For more information, see Asset hierarchies in the IoT SiteWise User Guide.
You can specify up to 10 hierarchies per asset model. For more information, see Quotas in the IoT SiteWise User Guide.
(dict) –
Contains an asset model hierarchy used in asset model creation. An asset model hierarchy determines the kind (or type) of asset that can belong to a hierarchy.
id (string) –
The ID to assign to the asset model hierarchy, if desired. IoT SiteWise automatically generates a unique ID for you, so this parameter is never required. However, if you prefer to supply your own ID instead, you can specify it here in UUID format. If you specify your own ID, it must be globally unique.
externalId (string) –
An external ID to assign to the asset model hierarchy. The external ID must be unique among asset model hierarchies within this asset model. For more information, see Using external IDs in the IoT SiteWise User Guide.
name (string) – [REQUIRED]
The name of the asset model hierarchy definition (as specified in the CreateAssetModel or UpdateAssetModel API operation).
childAssetModelId (string) – [REQUIRED]
The ID of an asset model for this hierarchy. This can be either the actual ID in UUID format, or else
externalId:followed by the external ID, if it has one. For more information, see Referencing objects with external IDs in the IoT SiteWise User Guide.
assetModelCompositeModels (list) –
The composite models that are part of this asset model. It groups properties (such as attributes, measurements, transforms, and metrics) and child composite models that model parts of your industrial equipment. Each composite model has a type that defines the properties that the composite model supports. Use composite models to define alarms on this asset model.
Note
When creating custom composite models, you need to use CreateAssetModelCompositeModel. For more information, see Creating custom composite models (Components) in the IoT SiteWise User Guide.
(dict) –
Contains a composite model definition in an asset model. This composite model definition is applied to all assets created from the asset model.
id (string) –
The ID to assign to the composite model, if desired. IoT SiteWise automatically generates a unique ID for you, so this parameter is never required. However, if you prefer to supply your own ID instead, you can specify it here in UUID format. If you specify your own ID, it must be globally unique.
externalId (string) –
An external ID to assign to the composite model. The external ID must be unique among composite models within this asset model. For more information, see Using external IDs in the IoT SiteWise User Guide.
name (string) – [REQUIRED]
The name of the composite model.
description (string) –
The description of the composite model.
type (string) – [REQUIRED]
The type of the composite model. For alarm composite models, this type is
AWS/ALARM.properties (list) –
The asset property definitions for this composite model.
(dict) –
Contains an asset model property definition. This property definition is applied to all assets created from the asset model.
id (string) –
The ID to assign to the asset model property, if desired. IoT SiteWise automatically generates a unique ID for you, so this parameter is never required. However, if you prefer to supply your own ID instead, you can specify it here in UUID format. If you specify your own ID, it must be globally unique.
externalId (string) –
An external ID to assign to the property definition. The external ID must be unique among property definitions within this asset model. For more information, see Using external IDs in the IoT SiteWise User Guide.
name (string) – [REQUIRED]
The name of the property definition.
dataType (string) – [REQUIRED]
The data type of the property definition.
If you specify
STRUCT, you must also specifydataTypeSpecto identify the type of the structure for this property.dataTypeSpec (string) –
The data type of the structure for this property. This parameter is required on properties that have the
STRUCTdata type.The options for this parameter depend on the type of the composite model in which you define this property. Use
AWS/ALARM_STATEfor alarm state in alarm composite models.unit (string) –
The unit of the property definition, such as
NewtonsorRPM.type (dict) – [REQUIRED]
The property definition type (see
PropertyType). You can only specify one type in a property definition.attribute (dict) –
Specifies an asset attribute property. An attribute generally contains static information, such as the serial number of an IIoT wind turbine.
defaultValue (string) –
The default value of the asset model property attribute. All assets that you create from the asset model contain this attribute value. You can update an attribute’s value after you create an asset. For more information, see Updating attribute values in the IoT SiteWise User Guide.
measurement (dict) –
Specifies an asset measurement property. A measurement represents a device’s raw sensor data stream, such as timestamped temperature values or timestamped power values.
processingConfig (dict) –
The processing configuration for the given measurement property. You can configure measurements to be kept at the edge or forwarded to the Amazon Web Services Cloud. By default, measurements are forwarded to the cloud.
forwardingConfig (dict) – [REQUIRED]
The forwarding configuration for the given measurement property.
state (string) – [REQUIRED]
The forwarding state for the given property.
transform (dict) –
Specifies an asset transform property. A transform contains a mathematical expression that maps a property’s data points from one form to another, such as a unit conversion from Celsius to Fahrenheit.
expression (string) – [REQUIRED]
The mathematical expression that defines the transformation function. You can specify up to 10 variables per expression. You can specify up to 10 functions per expression.
For more information, see Quotas in the IoT SiteWise User Guide.
variables (list) – [REQUIRED]
The list of variables used in the expression.
(dict) –
Contains expression variable information.
name (string) – [REQUIRED]
The friendly name of the variable to be used in the expression.
value (dict) – [REQUIRED]
The variable that identifies an asset property from which to use values.
propertyId (string) –
The ID of the property to use as the variable. You can use the property
nameif it’s from the same asset model. If the property has an external ID, you can specifyexternalId:followed by the external ID. For more information, see Using external IDs in the IoT SiteWise User Guide.hierarchyId (string) –
The ID of the hierarchy to query for the property ID. You can use the hierarchy’s name instead of the hierarchy’s ID. If the hierarchy has an external ID, you can specify
externalId:followed by the external ID. For more information, see Using external IDs in the IoT SiteWise User Guide.You use a hierarchy ID instead of a model ID because you can have several hierarchies using the same model and therefore the same
propertyId. For example, you might have separately grouped assets that come from the same asset model. For more information, see Asset hierarchies in the IoT SiteWise User Guide.propertyPath (list) –
The path of the property.
(dict) –
Represents one level between a property and the root of the asset model.
id (string) –
The ID of the path segment.
name (string) –
The name of the path segment.
processingConfig (dict) –
The processing configuration for the given transform property. You can configure transforms to be kept at the edge or forwarded to the Amazon Web Services Cloud. You can also configure transforms to be computed at the edge or in the cloud.
computeLocation (string) – [REQUIRED]
The compute location for the given transform property.
forwardingConfig (dict) –
The forwarding configuration for a given property.
state (string) – [REQUIRED]
The forwarding state for the given property.
metric (dict) –
Specifies an asset metric property. A metric contains a mathematical expression that uses aggregate functions to process all input data points over a time interval and output a single data point, such as to calculate the average hourly temperature.
expression (string) – [REQUIRED]
The mathematical expression that defines the metric aggregation function. You can specify up to 10 variables per expression. You can specify up to 10 functions per expression.
For more information, see Quotas in the IoT SiteWise User Guide.
variables (list) – [REQUIRED]
The list of variables used in the expression.
(dict) –
Contains expression variable information.
name (string) – [REQUIRED]
The friendly name of the variable to be used in the expression.
value (dict) – [REQUIRED]
The variable that identifies an asset property from which to use values.
propertyId (string) –
The ID of the property to use as the variable. You can use the property
nameif it’s from the same asset model. If the property has an external ID, you can specifyexternalId:followed by the external ID. For more information, see Using external IDs in the IoT SiteWise User Guide.hierarchyId (string) –
The ID of the hierarchy to query for the property ID. You can use the hierarchy’s name instead of the hierarchy’s ID. If the hierarchy has an external ID, you can specify
externalId:followed by the external ID. For more information, see Using external IDs in the IoT SiteWise User Guide.You use a hierarchy ID instead of a model ID because you can have several hierarchies using the same model and therefore the same
propertyId. For example, you might have separately grouped assets that come from the same asset model. For more information, see Asset hierarchies in the IoT SiteWise User Guide.propertyPath (list) –
The path of the property.
(dict) –
Represents one level between a property and the root of the asset model.
id (string) –
The ID of the path segment.
name (string) –
The name of the path segment.
window (dict) – [REQUIRED]
The window (time interval) over which IoT SiteWise computes the metric’s aggregation expression. IoT SiteWise computes one data point per
window.tumbling (dict) –
The tumbling time interval window.
interval (string) – [REQUIRED]
The time interval for the tumbling window. The interval time must be between 1 minute and 1 week.
IoT SiteWise computes the
1winterval the end of Sunday at midnight each week (UTC), the1dinterval at the end of each day at midnight (UTC), the1hinterval at the end of each hour, and so on.When IoT SiteWise aggregates data points for metric computations, the start of each interval is exclusive and the end of each interval is inclusive. IoT SiteWise places the computed data point at the end of the interval.
offset (string) –
The offset for the tumbling window. The
offsetparameter accepts the following:The offset time. For example, if you specify
18hforoffsetand1dforinterval, IoT SiteWise aggregates data in one of the following ways:If you create the metric before or at 6 PM (UTC), you get the first aggregation result at 6 PM (UTC) on the day when you create the metric.
If you create the metric after 6 PM (UTC), you get the first aggregation result at 6 PM (UTC) the next day.
The ISO 8601 format. For example, if you specify
PT18Hforoffsetand1dforinterval, IoT SiteWise aggregates data in one of the following ways:If you create the metric before or at 6 PM (UTC), you get the first aggregation result at 6 PM (UTC) on the day when you create the metric.
If you create the metric after 6 PM (UTC), you get the first aggregation result at 6 PM (UTC) the next day.
The 24-hour clock. For example, if you specify
00:03:00foroffset,5mforinterval, and you create the metric at 2 PM (UTC), you get the first aggregation result at 2:03 PM (UTC). You get the second aggregation result at 2:08 PM (UTC).The offset time zone. For example, if you specify
2021-07-23T18:00-08foroffsetand1dforinterval, IoT SiteWise aggregates data in one of the following ways:If you create the metric before or at 6 PM (PST), you get the first aggregation result at 6 PM (PST) on the day when you create the metric.
If you create the metric after 6 PM (PST), you get the first aggregation result at 6 PM (PST) the next day.
processingConfig (dict) –
The processing configuration for the given metric property. You can configure metrics to be computed at the edge or in the Amazon Web Services Cloud. By default, metrics are forwarded to the cloud.
computeLocation (string) – [REQUIRED]
The compute location for the given metric property.
clientToken (string) –
A unique case-sensitive identifier that you can provide to ensure the idempotency of the request. Don’t reuse this client token if a new idempotent request is required.
This field is autopopulated if not provided.
tags (dict) –
A list of key-value pairs that contain metadata for the asset model. For more information, see Tagging your IoT SiteWise resources in the IoT SiteWise User Guide.
(string) –
(string) –
- Return type:
dict
- Returns:
Response Syntax
{ 'assetModelId': 'string', 'assetModelArn': 'string', 'assetModelStatus': { 'state': 'CREATING'|'ACTIVE'|'UPDATING'|'PROPAGATING'|'DELETING'|'FAILED', 'error': { 'code': 'VALIDATION_ERROR'|'INTERNAL_FAILURE', 'message': 'string', 'details': [ { 'code': 'INCOMPATIBLE_COMPUTE_LOCATION'|'INCOMPATIBLE_FORWARDING_CONFIGURATION', 'message': 'string' }, ] } } }
Response Structure
(dict) –
assetModelId (string) –
The ID of the asset model, in UUID format. You can use this ID when you call other IoT SiteWise API operations.
assetModelArn (string) –
The ARN of the asset model, which has the following format.
arn:${Partition}:iotsitewise:${Region}:${Account}:asset-model/${AssetModelId}assetModelStatus (dict) –
The status of the asset model, which contains a state (
CREATINGafter successfully calling this operation) and any error message.state (string) –
The current state of the asset model.
error (dict) –
Contains associated error information, if any.
code (string) –
The error code.
message (string) –
The error message.
details (list) –
A list of detailed errors.
(dict) –
Contains detailed error information.
code (string) –
The error code.
message (string) –
The error message.
Exceptions
IoTSiteWise.Client.exceptions.InvalidRequestExceptionIoTSiteWise.Client.exceptions.ResourceAlreadyExistsExceptionIoTSiteWise.Client.exceptions.ResourceNotFoundExceptionIoTSiteWise.Client.exceptions.InternalFailureExceptionIoTSiteWise.Client.exceptions.ThrottlingExceptionIoTSiteWise.Client.exceptions.LimitExceededExceptionIoTSiteWise.Client.exceptions.ConflictingOperationException