# Contentful: Experience API experiencing issues on upsert operations

- Provider: [Contentful](https://outages.cc/contentful.md)
- Type: Incident
- State: Resolved
- Worst impact: Degraded performance
- Started: 2026-08-17 09:05 UTC
- Resolved: 2026-08-17 11:56 UTC (lasted 2 h 52 min)
- Components: Experience API, Ninetailed (Personalization) - Experience API
- Official update: https://stspg.io/qksfwz995mrq

## Updates from Contentful

### resolved, 2026-08-17 11:56 UTC

The incident is resolved

### monitoring, 2026-08-17 10:19 UTC

We have mitigated the issue and are seeing improvements on the error rates. We will continue monitoring the situation.

### identified, 2026-08-17 09:37 UTC

We have identified the issue and are working with our upstream provider to provide a fix.

### investigating, 2026-08-17 09:05 UTC

We are investigating an issue where customers are experiencing errors with upsert operations on the Personalization Experience API.