<p>Modifies a subnet attribute. You can only modify one attribute at a time.</p> <p>Use this action to modify subnets on Amazon Web Services Outposts.</p> <ul> <li> <p>To modify a subnet on an Outpost rack, set both <code>MapCustomerOwnedIpOnLaunch</code> and <code>CustomerOwnedIpv4Pool</code>. These two parameters act as a single attribute.</p> </li> <li> <p>To modify a subnet on an Outpost server, set either <code>EnableLniAtDeviceIndex</code> or <code>DisableLniAtDeviceIndex</code>.</p> </li> </ul> <p>For more information about Amazon Web Services Outposts, see the following:</p> <ul> <li> <p> <a href="https://docs.aws.amazon.com/outposts/latest/userguide/how-servers-work.html">Outpost servers</a> </p> </li> <li> <p> <a href="https://docs.aws.amazon.com/outposts/latest/userguide/how-racks-work.html">Outpost racks</a> </p> </li> </ul>

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

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