---
title: Fail processor
description: Raises an exception. This is useful for when you expect a pipeline to fail and want to relay a specific message to the requester. 
url: https://www.elastic.co/elastic/docs-builder/docs/3028/reference/enrich-processor/fail-processor
products:
  - Elasticsearch
---

# Fail processor
Raises an exception. This is useful for when you expect a pipeline to fail and want to relay a specific message to the requester.


| Name             | Required | Default | Description                                                                                                                                                                                                                    |
|------------------|----------|---------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `message`        | yes      | -       | The error message thrown by the processor. Supports [template snippets](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/3028/manage-data/ingest/transform-enrich/ingest-pipelines#template-snippets).            |
| `description`    | no       | -       | Description of the processor. Useful for describing the purpose of the processor or its configuration.                                                                                                                         |
| `if`             | no       | -       | Conditionally execute the processor. See [Conditionally run a processor](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/3028/manage-data/ingest/transform-enrich/ingest-pipelines#conditionally-run-processor). |
| `ignore_failure` | no       | `false` | Ignore failures for the processor. See [Handling pipeline failures](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/3028/manage-data/ingest/transform-enrich/ingest-pipelines#handling-pipeline-failures).       |
| `on_failure`     | no       | -       | Handle failures for the processor. See [Handling pipeline failures](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/3028/manage-data/ingest/transform-enrich/ingest-pipelines#handling-pipeline-failures).       |
| `tag`            | no       | -       | Identifier for the processor. Useful for debugging and metrics.                                                                                                                                                                |

```js
{
  "fail": {
    "if" : "ctx.tags.contains('production') != true",
    "message": "The production tag is not present, found tags: {{{tags}}}"
  }
}
```