# What this PR does
Refactors the foreign key relationship between `AlertGroup` and
`SlackMessage` models (see
https://github.com/grafana/oncall-private/issues/1867 for more info).
## Which issue(s) this PR fixes
https://github.com/grafana/oncall-private/issues/1867
## Checklist
- [x] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] `CHANGELOG.md` updated (or `pr:no changelog` PR label added if not
required)