## Validate a DLP regex pattern

`client.zeroTrust.dlp.patterns.validate(PatternValidateParamsparams, RequestOptionsoptions?): PatternValidateResponse`

**post** `/accounts/{account_id}/dlp/patterns/validate`

Validates whether this pattern is a valid regular expression. Rejects it if
the regular expression is too complex or can match an unbounded-length
string. The regex will be rejected if it uses `*` or `+`. Bound the maximum
number of characters that can be matched using a range, e.g. `{1,100}`.

### Parameters

- `params: PatternValidateParams`

  - `account_id: string`

    Path param: Account ID.

  - `regex: string`

    Body param

  - `max_match_bytes?: number | null`

    Body param: Maximum number of bytes that the regular expression can match.

    If this is `null` then there is no limit on the length. Patterns can use
    `*` and `+`. Otherwise repeats should use a range `{m,n}` to restrict
    patterns to the length. If this field is missing, then a default length
    limit is used.

    Note that the length is specified in bytes. Since regular expressions
    use UTF-8 the pattern `.` can match up to 4 bytes. Hence `.{1,256}`
    has a maximum length of 1024 bytes.

### Returns

- `PatternValidateResponse`

  - `valid: boolean`

### Example

```node
import Cloudflare from 'cloudflare';

const client = new Cloudflare({
  apiToken: process.env['CLOUDFLARE_API_TOKEN'], // This is the default and can be omitted
});

const response = await client.zeroTrust.dlp.patterns.validate({
  account_id: 'account_id',
  regex: 'regex',
});

console.log(response.valid);
```

#### Response

```json
{
  "errors": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "messages": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "success": true,
  "result": {
    "valid": true
  }
}
```