CreateFlowDefinition - Amazon SageMaker Service
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Creates a flow definition.

Request Syntax

{ "FlowDefinitionName": "string", "HumanLoopActivationConfig": { "HumanLoopActivationConditionsConfig": { "HumanLoopActivationConditions": "string" } }, "HumanLoopConfig": { "HumanTaskUiArn": "string", "PublicWorkforceTaskPrice": { "AmountInUsd": { "Cents": number, "Dollars": number, "TenthFractionsOfACent": number } }, "TaskAvailabilityLifetimeInSeconds": number, "TaskCount": number, "TaskDescription": "string", "TaskKeywords": [ "string" ], "TaskTimeLimitInSeconds": number, "TaskTitle": "string", "WorkteamArn": "string" }, "HumanLoopRequestSource": { "AwsManagedHumanLoopRequestSource": "string" }, "OutputConfig": { "KmsKeyId": "string", "S3OutputPath": "string" }, "RoleArn": "string", "Tags": [ { "Key": "string", "Value": "string" } ] }

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.


The name of your flow definition.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 63.

Pattern: ^[a-z0-9](-*[a-z0-9]){0,62}

Required: Yes


An object containing information about the events that trigger a human workflow.

Type: HumanLoopActivationConfig object

Required: No


An object containing information about the tasks the human reviewers will perform.

Type: HumanLoopConfig object

Required: Yes


Container for configuring the source of human task requests. Use to specify if Amazon Rekognition or Amazon Textract is used as an integration source.

Type: HumanLoopRequestSource object

Required: No


An object containing information about where the human review results will be uploaded.

Type: FlowDefinitionOutputConfig object

Required: Yes


The Amazon Resource Name (ARN) of the role needed to call other services on your behalf. For example, arn:aws:iam::1234567890:role/service-role/AmazonSageMaker-ExecutionRole-20180111T151298.

Type: String

Length Constraints: Minimum length of 20. Maximum length of 2048.

Pattern: ^arn:aws[a-z\-]*:iam::\d{12}:role/?[a-zA-Z_0-9+=,.@\-_/]+$

Required: Yes


An array of key-value pairs that contain metadata to help you categorize and organize a flow definition. Each tag consists of a key and a value, both of which you define.

Type: Array of Tag objects

Array Members: Minimum number of 0 items. Maximum number of 50 items.

Required: No

Response Syntax

{ "FlowDefinitionArn": "string" }

Response Elements

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

The following data is returned in JSON format by the service.


The Amazon Resource Name (ARN) of the flow definition you create.

Type: String

Length Constraints: Maximum length of 1024.

Pattern: arn:aws[a-z\-]*:sagemaker:[a-z0-9\-]*:[0-9]{12}:flow-definition/.*


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


Resource being accessed is in use.

HTTP Status Code: 400


You have exceeded an Amazon SageMaker resource limit. For example, you might have too many training jobs created.

HTTP Status Code: 400

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: