# What this PR does
Extend list of exceptions to ignore on posting message to slack channel
## Which issue(s) this PR fixes
https://github.com/grafana/oncall/issues/3694
## 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)
