{
  "success": true,
  "total": 2,
  "successful": 2,
  "failed": 0,
  "results": [
    {
      "email": "newuser@company.com",
      "success": true,
      "invitationId": "orginv_2ABC123DEF",
      "status": "pending",
      "type": "invitation",
      "metadata": {}
    },
    {
      "email": "existinguser@company.com",
      "success": true,
      "userId": "user_2XYZ789GHI",
      "membershipId": "orgmem_2MNO456PQR",
      "status": "active",
      "type": "direct_membership",
      "metadata": {}
    }
  ]
}

{
  "success": true,
  "total": 123,
  "successful": 123,
  "failed": 123,
  "results": [
    {
      "email": "jsmith@example.com",
      "success": true,
      "invitationId": "orginv_2ABC123DEF",
      "status": "pending",
      "type": "invitation",
      "metadata": {}
    }
  ],
  "errors": [
    {
      "email": "jsmith@example.com",
      "success": false,
      "error": "Invalid email address"
    }
  ]
}

{
  "error": "Invalid request data",
  "details": [
    {
      "message": "Invalid email address",
      "path": [
        "invitations",
        0,
        "email"
      ]
    }
  ]
}

{
  "error": "Unauthorized: User is not an admin in this organization"
}

{
  "error": "Internal Server Error"
}