# Schema proposal diff views returning errors

- Provider: [Apollo GraphOS](https://down.guide/apollo)
- Level: confirmed
- Impact: Degraded
- lasted 2h 58m
- started 2026-04-16 12:45 UTC
- id: DWN-e896f821ee
- Official page: https://status.apollographql.com/incidents/01KPB55RTD2TTR6JZEV21RKHDD

## Updates from Apollo GraphOS
### 2026-04-16 12:45 UTC: investigating
We are aware of an issue affecting GraphOS Studio where users may encounter errors when attempting to view the Changes or Schema Reference tabs within graph proposal.
We are investigating and will give an update soon.

### 2026-04-16 13:27 UTC: monitoring
We have identified the root cause of the failures affecting the Changes and References tabs in Schema Proposals. A fix has been deployed and we continue to monitor and investigate.

### 2026-04-16 15:43 UTC: resolved
Proposals errors have been clear for ~2 hours since the rollback reached prod. Marking resolved.

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