curl --request POST \
  --url https://api.melso.ai/v1/companies/{company_id}/mandates \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "administration": "aeat",
  "procedures": [
    "tax_returns",
    "notifications",
    "certificates"
  ],
  "signer": {
    "name": "Lucía Martín Pérez",
    "tax_id": "12345678Z",
    "email": "lucia@example.com"
  },
  "return_url": "https://partner.example.com/melso/mandate-done"
}
'

import requests

url = "https://api.melso.ai/v1/companies/{company_id}/mandates"

payload = {
    "administration": "aeat",
    "procedures": ["tax_returns", "notifications", "certificates"],
    "signer": {
        "name": "Lucía Martín Pérez",
        "tax_id": "12345678Z",
        "email": "lucia@example.com"
    },
    "return_url": "https://partner.example.com/melso/mandate-done"
}
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({
    administration: 'aeat',
    procedures: ['tax_returns', 'notifications', 'certificates'],
    signer: {name: 'Lucía Martín Pérez', tax_id: '12345678Z', email: 'lucia@example.com'},
    return_url: 'https://partner.example.com/melso/mandate-done'
  })
};

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

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "administration": "aeat",
  "procedures": [
    "tax_returns"
  ],
  "status": "pending_signature",
  "created_at": "2023-11-07T05:31:56Z",
  "signing_url": "<string>",
  "rejection_reason": "<string>",
  "signed_at": "2023-11-07T05:31:56Z",
  "activated_at": "2023-11-07T05:31:56Z",
  "revoked_at": "2023-11-07T05:31:56Z",
  "evidence": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "filename": "<string>",
    "content_type": "<string>",
    "size_bytes": 123,
    "url": "<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": "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"
}