curl --request POST \
  --url https://sandbox-api.terabusinessfinance.com/v1/supplier-submissions/documents/upload-url \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "external_reference": "<string>",
  "filename": "<string>",
  "content_type": "<string>",
  "byte_size": 123
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    external_reference: '<string>',
    filename: '<string>',
    content_type: '<string>',
    byte_size: 123
  })
};

fetch('https://sandbox-api.terabusinessfinance.com/v1/supplier-submissions/documents/upload-url', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://sandbox-api.terabusinessfinance.com/v1/supplier-submissions/documents/upload-url"

payload = {
    "external_reference": "<string>",
    "filename": "<string>",
    "content_type": "<string>",
    "byte_size": 123
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "document_id": "11111111-1111-4111-8111-111111111111",
  "upload_url": "https://upload.example.test/quarantine/supplier-held/example"
}

{
  "error": {
    "code": "bad_request",
    "message": "Malformed JSON"
  }
}

{
  "error": {
    "code": "unauthorized",
    "message": "Authentication failed"
  }
}

{
  "error": {
    "code": "forbidden",
    "message": "Credential is not authorised for this operation"
  }
}

{
  "error": {
    "code": "payload_too_large",
    "message": "Request body exceeds 64 KiB"
  }
}

{
  "error": {
    "code": "validation_error",
    "message": "Request does not match the submission contract",
    "details": [
      {
        "path": "funding_amount",
        "message": "Minimum amount is £1,000"
      }
    ]
  }
}

{
  "error": {
    "code": "rate_limited",
    "message": "Rate limit exceeded. Retry after the Retry-After header."
  }
}

{
  "error": {
    "code": "service_unavailable",
    "message": "Operation could not be completed"
  }
}