<p>Creates a state machine. A state machine consists of a collection of states that can do work (<code>Task</code> states), determine to which states to transition next (<code>Choice</code> states), stop an execution with an error (<code>Fail</code> states), and so on. State machines are specified using a JSON-based, structured language. For more information, see <a href="https://docs.aws.amazon.com/step-functions/latest/dg/concepts-amazon-states-language.html">Amazon States Language</a> in the Step Functions User Guide.</p> <note> <p>This operation is eventually consistent. The results are best effort and may not reflect very recent updates and changes.</p> </note> <note> <p> <code>CreateStateMachine</code> is an idempotent API. Subsequent requests won’t create a duplicate resource if it was already created. <code>CreateStateMachine</code>'s idempotency check is based on the state machine <code>name</code>, <code>definition</code>, <code>type</code>, <code>LoggingConfiguration</code> and <code>TracingConfiguration</code>. If a following request has a different <code>roleArn</code> or <code>tags</code>, Step Functions will ignore these differences and treat it as an idempotent request of the previous. In this case, <code>roleArn</code> and <code>tags</code> will not be updated, even if they are different.</p> </note>

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}