On Wednesday, 12/7/2022, from approximately 9:00 p.m. (ET) until Friday, 12/9/2022, at 9:00 a.m. (ET), some users experienced issues with Smart Groups.

This incident was caused by a backend system upgrade that led to users being removed from Smart Groups when they should not have been. As a result, the users were re-enrolled in campaigns, and events were added to the users’ timelines. Once the issue was resolved, KMSAT was able to return to normal performance by Friday, 12/9/2022, at 9:00 a.m. (ET). The campaign re-enrollments and timeline events for the affected users were also corrected.

To prevent this type of issue in the future, an issue where backend errors would appear as successful has been patched.

No data loss occurred as a result of the issue.