curl --request POST \
  --url https://api.melso.ai/v1/companies/{company_id}/cases/{case_id}/attested-approvals \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "expected_version": 2,
  "approver": {
    "name": "Pablo Ruiz Ortega",
    "email": "pablo@example.com",
    "role": "owner",
    "tax_id": "12345678Z",
    "external_user_id": "usr_3k9d2"
  },
  "evidence": {
    "approved_at": "2026-11-20T16:03:12Z",
    "ip_address": "203.0.113.24",
    "user_agent": "Mozilla/5.0",
    "authentication": "strong_customer_authentication",
    "shown_document_sha256": "4b1e7c9a2d5f8e0b3c6a9d2f5e8b1c4a7d0e3f6b9c2a5d8e1f4b7c0a3d6e9f2b"
  }
}
'

import requests

url = "https://api.melso.ai/v1/companies/{company_id}/cases/{case_id}/attested-approvals"

payload = {
    "expected_version": 2,
    "approver": {
        "name": "Pablo Ruiz Ortega",
        "email": "pablo@example.com",
        "role": "owner",
        "tax_id": "12345678Z",
        "external_user_id": "usr_3k9d2"
    },
    "evidence": {
        "approved_at": "2026-11-20T16:03:12Z",
        "ip_address": "203.0.113.24",
        "user_agent": "Mozilla/5.0",
        "authentication": "strong_customer_authentication",
        "shown_document_sha256": "4b1e7c9a2d5f8e0b3c6a9d2f5e8b1c4a7d0e3f6b9c2a5d8e1f4b7c0a3d6e9f2b"
    }
}
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({
    expected_version: 2,
    approver: {
      name: 'Pablo Ruiz Ortega',
      email: 'pablo@example.com',
      role: 'owner',
      tax_id: '12345678Z',
      external_user_id: 'usr_3k9d2'
    },
    evidence: {
      approved_at: '2026-11-20T16:03:12Z',
      ip_address: '203.0.113.24',
      user_agent: 'Mozilla/5.0',
      authentication: 'strong_customer_authentication',
      shown_document_sha256: '4b1e7c9a2d5f8e0b3c6a9d2f5e8b1c4a7d0e3f6b9c2a5d8e1f4b7c0a3d6e9f2b'
    }
  })
};

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

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "kind": "modelo",
  "status": "draft",
  "created_at": "2023-11-07T05:31:56Z",
  "deadline": "2023-12-25",
  "current_version": 123,
  "approved_version": 123,
  "approvals": [
    {
      "version": 123,
      "approver": {
        "name": "<string>",
        "role": "owner",
        "tax_id": "<string>"
      },
      "method": "melso",
      "approved_at": "2023-11-07T05:31:56Z"
    }
  ],
  "payment_url": "<string>",
  "information_request": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "items": [
      {
        "id": "<string>",
        "kind": "document",
        "label": "<string>"
      }
    ]
  },
  "messages": [
    {
      "author": "company",
      "content": "<string>",
      "created_at": "2023-11-07T05:31:56Z"
    }
  ],
  "documents": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "filename": "<string>",
      "content_type": "<string>",
      "size_bytes": 123,
      "url": "<string>"
    }
  ],
  "external_reference": "<string>",
  "completed_on": "2023-12-25",
  "updated_at": "2023-11-07T05:31:56Z"
}

{
  "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": "Review and approve in the authenticated web application",
  "code": "person_required",
  "request_id": "req_01JAB3K9X2"
}

{
  "error": "invoice not found",
  "code": "not_found",
  "request_id": "req_01JAB3K9X2"
}

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