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Showing content from https://docs.aws.amazon.com/iot-sitewise/latest/APIReference/API_UpdateAssetProperty.html below:

UpdateAssetProperty - AWS IoT SiteWise

UpdateAssetProperty

Updates an asset property's alias and notification state.

Important

This operation overwrites the property's existing alias and notification state. To keep your existing property's alias or notification state, you must include the existing values in the UpdateAssetProperty request. For more information, see DescribeAssetProperty.

Request Syntax

PUT /assets/assetId/properties/propertyId HTTP/1.1
Content-type: application/json

{
   "clientToken": "string",
   "propertyAlias": "string",
   "propertyNotificationState": "string",
   "propertyUnit": "string"
}

URI Request Parameters

The request uses the following URI parameters.

assetId

The ID of the asset to be updated. 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 AWS IoT SiteWise User Guide.

Length Constraints: Minimum length of 13. Maximum length of 139.

Pattern: ^(?!00000000-0000-0000-0000-000000000000)[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$|^externalId:[a-zA-Z0-9_][a-zA-Z_\-0-9.:]*[a-zA-Z0-9_]+

Required: Yes

propertyId

The ID of the asset property to be updated. 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 AWS IoT SiteWise User Guide.

Length Constraints: Minimum length of 13. Maximum length of 139.

Pattern: ^(?!00000000-0000-0000-0000-000000000000)[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$|^externalId:[a-zA-Z0-9_][a-zA-Z_\-0-9.:]*[a-zA-Z0-9_]+

Required: Yes

Request Body

The request accepts the following data in JSON format.

clientToken

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.

Type: String

Length Constraints: Minimum length of 36. Maximum length of 64.

Pattern: \S{36,64}

Required: No

propertyAlias

The alias that identifies the property, such as an OPC-UA server data stream path (for example, /company/windfarm/3/turbine/7/temperature). For more information, see Mapping industrial data streams to asset properties in the AWS IoT SiteWise User Guide.

If you omit this parameter, the alias is removed from the property.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1000.

Pattern: [^\u0000-\u001F\u007F]+

Required: No

propertyNotificationState

The MQTT notification state (enabled or disabled) for this asset property. When the notification state is enabled, AWS IoT SiteWise publishes property value updates to a unique MQTT topic. For more information, see Interacting with other services in the AWS IoT SiteWise User Guide.

If you omit this parameter, the notification state is set to DISABLED.

Type: String

Valid Values: ENABLED | DISABLED

Required: No

propertyUnit

The unit of measure (such as Newtons or RPM) of the asset property. If you don't specify a value for this parameter, the service uses the value of the assetModelProperty in the asset model.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 256.

Pattern: [^\u0000-\u001F\u007F]+

Required: No

Response Syntax

HTTP/1.1 200

Response Elements

If the action is successful, the service sends back an HTTP 200 response with an empty HTTP body.

Errors

For information about the errors that are common to all actions, see Common Errors.

ConflictingOperationException

Your request has conflicting operations. This can occur if you're trying to perform more than one operation on the same resource at the same time.

HTTP Status Code: 409

InternalFailureException

AWS IoT SiteWise can't process your request right now. Try again later.

HTTP Status Code: 500

InvalidRequestException

The request isn't valid. This can occur if your request contains malformed JSON or unsupported characters. Check your request and try again.

HTTP Status Code: 400

ResourceNotFoundException

The requested resource can't be found.

HTTP Status Code: 404

ThrottlingException

Your request exceeded a rate limit. For example, you might have exceeded the number of AWS IoT SiteWise assets that can be created per second, the allowed number of messages per second, and so on.

For more information, see Quotas in the AWS IoT SiteWise User Guide.

HTTP Status Code: 429