---
title: cf.response.1xxx_code
description: Contains the specific code for 1XXX Cloudflare errors.
image: https://developers.cloudflare.com/core-services-preview.png
---

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#  cf.response.1xxx\_code 

`cf.response.1xxx_code` ` Integer ` 

Contains the specific code for 1XXX Cloudflare errors.

Use this field to differentiate between 1XXX errors associated with the same HTTP status code. The default value is `0`.

For a list of 1XXX errors, refer to [Troubleshooting Cloudflare 1XXX errors](https://developers.cloudflare.com/support/troubleshooting/http-status-codes/cloudflare-1xxx-errors/).

**Note**: This field is only available in [Response Header Transform Rules](https://developers.cloudflare.com/rules/transform/response-header-modification/) and [Custom Errors](https://developers.cloudflare.com/rules/custom-errors/).

Example value:

```
1020
```

Categories: 
* Response

```json
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```