# Partial delivery failures to TikTok destinations

- Provider: [RudderStack](https://down.guide/rudderstack)
- Level: confirmed
- Impact: Degraded
- lasted 8h 30m
- started 2025-08-21 07:00 UTC
- Data Processing Pipeline (US), Data Processing Pipeline (EU)
- eu, us
- id: DWN-e726075fd7
- Official page: https://stspg.io/wdjzg4944f18

## Updates from RudderStack
### 2025-08-21 07:00 UTC: investigating
We are currently investigating the issue around failures for TikTok destinations

### 2025-08-21 15:15 UTC: identified
The issue has been identified and rollback is in progress

### 2025-08-21 15:30 UTC: resolved
The incident has been resolved. Changes made to determine how event\_source is set to TikTok events broke the deliveries for its server SDK sources.
Change has been reverted and failures have been replayed for all customers with configured backup

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