# Sync Runs Failing with Undefined Column Error

- Provider: [Census](https://down.guide/providers/census)
- Confidence: Confirmed
- Impact: Operational
- lasted 26m
- started 2025-06-06 17:52 UTC
- Sync Engine
- id: DWN-000cd26320
- Official page: https://stspg.io/ks3z8117g6tm

## Updates from Census
### 2025-06-06 17:52 UTC: monitoring
Some syncs started failing with the following error at 12:18pm (EST)
"ActiveRecord::StatementInvalid: PG::UndefinedColumn: ERROR: column sync\_configurations.new\_diff\_timestamp\_expression\_id does not exist"
This was due to a brief issue during a schema update. The problem has been resolved, and we are monitoring.

### 2025-06-06 18:18 UTC: resolved
This incident has been resolved.

From the builder: does your app depend on Census? [Sazabi](https://www.sazabi.com/?utm_source=down-guide&utm_medium=markdown&utm_content=census) detects problems in your own logs without hand-written monitors, and you can ask it in plain language which errors mention Census.

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