02 / Incident investigation
Start the investigation with what changed.
Milo assembles the release changes, linked tickets and earlier incident notes into a timeline, keeping confirmed facts separate from possible causes.
Incident timeline
- 09:10Release v2.18 deployed
Release notes: payment retry handling changed in PR #318.
- 09:18First checkout error report
The on-call Slack thread reports failed checkout attempts.
- 09:26Earlier incident linked for review
INC-072 describes a payment timeout; similarity is not evidence of the same cause.
Compare the failing requests with PR #318 and the earlier timeout before proposing a rollback.




