# OneSignal: Subscription API - Creation Failures

- Impact (vendor’s label): major
- Status: resolved
- Started: 2026-09-22 21:05 UTC · Resolved: 2026-09-22 21:30 UTC · Duration: 26 min
- Updates: 3 · Affected components: APIs & SDK Endpoints
- [Vendor status page: https://status.onesignal.com/incidents/01M35GAZEEMKKPMMRY4GM83WDC](https://status.onesignal.com/incidents/01M35GAZEEMKKPMMRY4GM83WDC)
- [Company: OneSignal](https://rewindex.com/company/onesignal.md)

## Summary

OneSignal’s Subscription API had a major outage preventing all customers from creating new subscriptions from 2026-09-22 21:05 UTC to 2026-09-22 21:30 UTC, lasting 25 min. A mitigation was applied at 21:19 UTC, and OneSignal confirmed all impacted systems were operating normally at resolution. _(machine-written, sol)_
## Timeline of updates

- **investigating** 2026-09-22 21:05 UTC: What’s happening: Customers are unable to create new subscriptions Who’s affected: All customers trying to create new subscriptions  Current Status: We are investigating the issue
- **monitoring** 2026-09-22 21:19 UTC: We have applied a mitigation that should resolve the impact. We are monitoring to confirm effectiveness.
- **resolved** 2026-09-22 21:30 UTC: The issue has been resolved. All impacted systems are now operating normally.

## Rewindex changes for this incident

- 2026-09-22 21:05 UTC: [Major incident: Subscription API - Creation Failures](https://rewindex.com/change/if9bea7df6e2734.md)


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Canonical: https://rewindex.com/company/onesignal/incidents/01M35GAZEEMKKPMMRY4GM83WDC · Markdown: https://rewindex.com/company/onesignal/incidents/01M35GAZEEMKKPMMRY4GM83WDC.md · JSON: https://rewindex.com/api/v1/companies/onesignal/incidents/01M35GAZEEMKKPMMRY4GM83WDC · Generated 2026-10-18T10:43:20.457Z