Creates a user and associates them with an existing file transfer protocol-enabled server. You can only create and associate users with servers that have the <code>IdentityProviderType</code> set to <code>SERVICE_MANAGED</code>. Using parameters for <code>CreateUser</code>, you can specify the user name, set the home directory, store the user's public key, and assign the user's Identity and Access Management (IAM) role. You can also optionally add a session policy, and assign metadata with tags that can be used to group and search for users.

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

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