> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mezmo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# High Error Rate

> Example threshold alert configuration that triggers when a high number of HTTP 5xx errors per application is detected in metric events.

This is an example of an alert that is triggered when a high rate of errors is detected. This example assumes there is a [Filter Processor](/telemetry-pipelines/filter-processor) or [Route Processor](/telemetry-pipelines/route-processor) that allows only Metric events, specifically `HTTP Status-5xx` errors. Check out the [Tutorial: Route Data](/practioner-guide-data-optimization/pipeline-module--route) topic for an example with `HTTP Status-200` messages.

## General Configuration

| Field | Value |
| - | - |
| Name | High rate of 5xx errors |
| Description | Detects high number of 5xx errors per application |

## Evaluation and Condition Configuration

| Field | Value |
| - | - |
| Alert Type | Threshold Alert |
| Event Type | Metric |
| Group by Field Paths | `.app` |
| Operation | Sum |
| Window Type | Tumbling |
| Window Duration (minutes) | 15 |
| Conditional Statement | `if (.value greater_or_equal` 60)\`\` |

## Payload Configuration

| Field | Value |
| - | - |
| Severity | Error |
| Message Style | Static |
| Subject | High number of 5xx errors |