curl --request POST \
  --url https://api.melso.ai/v1/companies/{company_id}/social-security/affiliations \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "employee_id": "6a1f0c2e-4b3d-4e5f-8a9b-0c1d2e3f4a5b",
  "action": "alta",
  "effective_date": "2026-11-02"
}
'

import requests

url = "https://api.melso.ai/v1/companies/{company_id}/social-security/affiliations"

payload = {
    "employee_id": "6a1f0c2e-4b3d-4e5f-8a9b-0c1d2e3f4a5b",
    "action": "alta",
    "effective_date": "2026-11-02"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    employee_id: '6a1f0c2e-4b3d-4e5f-8a9b-0c1d2e3f4a5b',
    action: 'alta',
    effective_date: '2026-11-02'
  })
};

fetch('https://api.melso.ai/v1/companies/{company_id}/social-security/affiliations', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "employee_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "action": "alta",
  "effective_date": "2023-12-25",
  "status": "pending",
  "created_at": "2023-11-07T05:31:56Z",
  "submitted_at": "2023-11-07T05:31:56Z",
  "resolution": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "filename": "<string>",
    "content_type": "<string>",
    "size_bytes": 123,
    "url": "<string>"
  },
  "rejection_reason": "<string>"
}

{
  "error": "lines[0].vat_rate must be 21, 10, 4 or 0",
  "code": "invalid_invoice",
  "request_id": "req_01JAB3K9X2"
}

{
  "error": "invalid token",
  "code": "unauthorized",
  "request_id": "req_01JAB3K9X2"
}

{
  "error": "The tax return changed or is not ready for approval",
  "code": "version_conflict",
  "request_id": "req_01JAB3K9X2"
}