# Fingerprint

> A stable key computed from an error's type, stack and route, used to decide which events belong to the same problem.

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

## In Pagerless

Computed in the SDK, or on the server if missing. You can send your own.

## Related terms

- [Alert grouping](https://pagerless.dev/glossary/alert-grouping): Combining many related signals, such as the same error repeated, into one problem so a responder sees it once.