curl --location --request PUT 'https://integrations.projectcor.com/v2/integrations/contracts/SF-CONTRACT-12345/attach' \
--header 'Authorization: Bearer YOUR_ACCESS_TOKEN' \
--header 'Content-Type: application/json' \
--data '{
  "metadata": {
    "source": "GLOBANT"
  },
  "users": [
    {
      "id": "{{external_user_id}}",
      "dates": [
        { "start": "2027-10-01", "end": "2028-11-01" },
        { "start": "2025-10-10" }
      ]
    },
    {
      "id": "external-user-id-5",
      "dates": [
        { "start": "2025-10-02", "end": "2026-11-01" }
      ]
    }
  ]
}'

import requests

url = "https://integrations.projectcor.com/v2/integrations/contracts/SF-CONTRACT-12345/attach"

payload = {
    "metadata": {
        "source": "GLOBANT"
    },
    "users": [
        {
            "id": "{{external_user_id}}",
            "dates": [
                {"start": "2027-10-01", "end": "2028-11-01"},
                {"start": "2025-10-10"}
            ]
        },
        {
            "id": "external-user-id-5",
            "dates": [
                {"start": "2025-10-02", "end": "2026-11-01"}
            ]
        }
    ]
}

headers = {
    "Authorization": "Bearer YOUR_ACCESS_TOKEN",
    "Content-Type": "application/json"
}

response = requests.put(url, json=payload, headers=headers)
print(response.json())

const response = await fetch(
  'https://integrations.projectcor.com/v2/integrations/contracts/SF-CONTRACT-12345/attach',
  {
    method: 'PUT',
    headers: {
      'Authorization': 'Bearer YOUR_ACCESS_TOKEN',
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      metadata: {
        source: 'GLOBANT'
      },
      users: [
        {
          id: '{{external_user_id}}',
          dates: [
            { start: '2027-10-01', end: '2028-11-01' },
            { start: '2025-10-10' }
          ]
        },
        {
          id: 'external-user-id-5',
          dates: [{ start: '2025-10-02', end: '2026-11-01' }]
        }
      ]
    })
  }
);

const data = await response.json();
console.log(data);

{
  "status": "partial_success",
  "company_id": 2336,
  "contract_id": "external-contract-id-1",
  "records_received": 2,
  "records_created": 1,
  "records_rejected": 1,
  "assigned": [
    {
      "id": 18,
      "user_id": 48915,
      "start_date": "2027-10-01T00:00:00.000Z",
      "end_date": "2028-11-01T00:00:00.000Z"
    }
  ],
  "errors": [
    {
      "id": "external-user-id-5",
      "error_code": "CE001",
      "message": "User not found in associations"
    },
    {
      "id": "external_user_id_12312333333333",
      "dates": [
        {
          "start": "2025-10-10",
          "end": null,
          "message": "Date malformatted. Start and end date are required"
        }
      ],
      "message": "Partial success. Some dates were rejected"
    }
  ]
}