Sets the result of a Lambda validation function. The function validates lifecycle hooks during a deployment that uses the Lambda or Amazon ECS compute platform. For Lambda deployments, the available lifecycle hooks are <code>BeforeAllowTraffic</code> and <code>AfterAllowTraffic</code>. For Amazon ECS deployments, the available lifecycle hooks are <code>BeforeInstall</code>, <code>AfterInstall</code>, <code>AfterAllowTestTraffic</code>, <code>BeforeAllowTraffic</code>, and <code>AfterAllowTraffic</code>. Lambda validation functions return <code>Succeeded</code> or <code>Failed</code>. For more information, see <a href="https://docs.aws.amazon.com/codedeploy/latest/userguide/reference-appspec-file-structure-hooks.html#appspec-hooks-lambda">AppSpec 'hooks' Section for an Lambda Deployment </a> and <a href="https://docs.aws.amazon.com/codedeploy/latest/userguide/reference-appspec-file-structure-hooks.html#appspec-hooks-ecs">AppSpec 'hooks' Section for an Amazon ECS Deployment</a>.

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

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