# Alert grouping

> Combining many related signals, such as the same error repeated, into one problem so a responder sees it once.

URL: https://pagerless.dev/glossary/alert-grouping
Updated: 2026-10-22

## In Pagerless

Errors with the same type, top stack frames and route share a fingerprint and become one problem.

## Related terms

- [Fingerprint](https://pagerless.dev/glossary/fingerprint): A stable key computed from an error's type, stack and route, used to decide which events belong to the same problem.
- [Alert fatigue](https://pagerless.dev/glossary/alert-fatigue): When responders receive so many alerts, many not actionable, that they start ignoring or muting them and miss the ones that matter.