---
title: cf.response.1xxx_code · Cloudflare Ruleset Engine docs
description: Contains the specific code for 1XXX Cloudflare errors.
chatbotDeprioritize: false
source_url:
  html: https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.response.1xxx_code/
  md: https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.response.1xxx_code/index.md
---

# 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:

```txt
1020
```

Categories:

* Response
