# `URL_NOT_HTTPS` URL must use https

Source: https://checkslip.com/en/problems/url-not-https

- **HTTP status**: `422`
- **Credit**: No credit taken

## Meaning

Messages carry names and account numbers, so only https is allowed.

## Fix

Use an `https://` URL with a valid certificate.

## Example response

```
{
  "type": "https://checkslip.com/problems/url-not-https",
  "title": "URL must use https",
  "status": 422,
  "code": "URL_NOT_HTTPS",
  "instance": "0192f3a4-7b1c-7d2e-8f30-4a5b6c7d8e9f"
}
```