# StepFunctionsStartExecutionJsonataProps

Properties for StartExecution using JSONata.

Extends: StepFunctionsStartExecutionJsonataProps
Extends: TaskStateJsonataBaseProps

- Source: [`aws-stepfunctions-tasks/lib/stepfunctions/start-execution.ts`](https://github.com/aws/aws-cdk/blob/v2.274.0/packages/aws-cdk-lib/aws-stepfunctions-tasks/lib/stepfunctions/start-execution.ts#L54)
- Type last changed: v2.234.0 · 8 Jan 2026

## Example

```ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import * as cdk from 'aws-cdk-lib';
import { aws_stepfunctions as stepfunctions } from 'aws-cdk-lib';
import { aws_stepfunctions_tasks as stepfunctions_tasks } from 'aws-cdk-lib';
import { aws_stepfunctions as interfaces_stepfunctions } from 'aws-cdk-lib/interfaces';

declare const assign: any;
declare const outputs: any;
declare const stateMachineRef: interfaces_stepfunctions.IStateMachineRef;
declare const taskInput: stepfunctions.TaskInput;
declare const taskRole: stepfunctions.TaskRole;
declare const timeout: stepfunctions.Timeout;
const stepFunctionsStartExecutionJsonataProps: stepfunctions_tasks.StepFunctionsStartExecutionJsonataProps = {
  stateMachine: stateMachineRef,

  // the properties below are optional
  assign: {
    assignKey: assign,
  },
  associateWithParent: false,
  comment: 'comment',
  credentials: {
    role: taskRole,
  },
  heartbeat: cdk.Duration.minutes(30),
  heartbeatTimeout: timeout,
  input: taskInput,
  integrationPattern: stepfunctions.IntegrationPattern.REQUEST_RESPONSE,
  name: 'name',
  outputs: outputs,
  queryLanguage: stepfunctions.QueryLanguage.JSON_PATH,
  stateName: 'stateName',
  taskTimeout: timeout,
  timeout: cdk.Duration.minutes(30),
};
```

## Properties

- `assign`: { [key: string]: any } — Workflow variables to store in this step.

  **Default:** Not assign variables

  Using workflow variables, you can store data in a step and retrieve that data in future steps.

- `associateWithParent`: boolean = false — Pass the execution ID from the context object to the execution input.

  This allows the Step Functions UI to link child executions from parent executions, making it easier to trace execution flow across state machines.

  If you set this property to `true`, the `input` property must be an object (provided by `sfn.TaskInput.fromObject`) or omitted entirely.

- `comment`: string — A comment describing this state.

  **Default:** No comment

- `credentials`: [Credentials](/cdk/api/v2/docs/aws-cdk-lib.aws_stepfunctions.Credentials.html) — Credentials for an IAM Role that the State Machine assumes for executing the task.

  **Default:** None (Task is executed using the State Machine's execution role)

  This enables cross-account resource invocations.

- `heartbeat`: [Duration](/cdk/api/v2/docs/aws-cdk-lib.Duration.html) = None — use `heartbeatTimeout`

- `heartbeatTimeout`: [Timeout](/cdk/api/v2/docs/aws-cdk-lib.aws_stepfunctions.Timeout.html) = None — Timeout for the heartbeat.

  [disable-awslint:duration-prop-type] is needed because all props interface in
  aws-stepfunctions-tasks extend this interface

- `input`: [TaskInput](/cdk/api/v2/docs/aws-cdk-lib.aws_stepfunctions.TaskInput.html) — The JSON input for the execution, same as that of StartExecution.

  **Default:** The state input (JSON path '$')

- `integrationPattern`: [IntegrationPattern](/cdk/api/v2/docs/aws-cdk-lib.aws_stepfunctions.IntegrationPattern.html) — AWS Step Functions integrates with services directly in the Amazon States Language.

  **Default:** `IntegrationPattern.REQUEST_RESPONSE` for most tasks. `IntegrationPattern.RUN_JOB` for the following exceptions: `BatchSubmitJob`, `EmrAddStep`, `EmrCreateCluster`, `EmrTerminationCluster`, and `EmrContainersStartJobRun`.

  You can control these AWS services using service integration patterns.

  Depending on the AWS Service, the Service Integration Pattern availability will vary.

- `name`: string = None — The name of the execution, same as that of StartExecution.

- `outputs`: any — Used to specify and transform output from the state.

  **Default:** $states.result or $states.errorOutput

  When specified, the value overrides the state output default.
  The output field accepts any JSON value (object, array, string, number, boolean, null).
  Any string value, including those inside objects or arrays,
  will be evaluated as JSONata if surrounded by {% %} characters.
  Output also accepts a JSONata expression directly.

- `queryLanguage`: [QueryLanguage](/cdk/api/v2/docs/aws-cdk-lib.aws_stepfunctions.QueryLanguage.html) = JSONPath — The name of the query language used by the state.

  If the state does not contain a `queryLanguage` field,
  then it will use the query language specified in the top-level `queryLanguage` field.

- `stateMachine`: [IStateMachineRef](/cdk/api/v2/docs/aws-cdk-lib.interfaces.aws_stepfunctions.IStateMachineRef.html) (required) — The Step Functions state machine to start the execution on.

- `stateName`: string — Optional name for this state.

  **Default:** The construct ID will be used as state name

- `taskTimeout`: [Timeout](/cdk/api/v2/docs/aws-cdk-lib.aws_stepfunctions.Timeout.html) = None — Timeout for the task.

  [disable-awslint:duration-prop-type] is needed because all props interface in
  aws-stepfunctions-tasks extend this interface

- `timeout`: [Duration](/cdk/api/v2/docs/aws-cdk-lib.Duration.html) = None — use `taskTimeout`