# Pinecone: Major incident: [GCP][europe-west4] Errors for upsert operations on some indexes

**Summary:** Pinecone reported a major incident causing upsert errors on some indexes in GCP europe-west4, affecting Serverless Indexes. It started at 2026-03-13 08:50 UTC and was resolved at 2026-03-13 09:53 UTC, lasting 1 h 3 min; a fix was implemented and monitored before resolution. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-03-13 08:50 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/1q347rkjvkz3](https://stspg.io/1q347rkjvkz3)
- [Company: Pinecone](https://rewindex.com/company/pinecone.md)
- Versions: before (none: first archived) → after incident\_version:35/s1jv4vdbf0rx@51042013f61c
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ [GCP][europe-west4] Errors for upsert operations on some indexes
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-03-13 08:50 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-03-13 09:53 UTC
```

**6. Added: Affected components**

```diff
+ GCP europe-west4, Serverless Indexes - GCP europe-west4
```

**7. Added: Update** (investigating) · 2026-03-13 08:50 UTC

```diff
+ We are currently investigating this issue.
```

**8. Added: Update** (monitoring) · 2026-03-13 09:23 UTC

```diff
+ A fix has been implemented and we are monitoring the results.
```

**9. Added: Update** (resolved) · 2026-03-13 09:53 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-03-13 08:50 UTC | Major incident: \[GCP\]\[europe-west4\] Errors for upsert operations on some indexes (this change) | outage |

All Pinecone changes: [timeline](https://rewindex.com/company/pinecone/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/icc2f413a6a58ad · Markdown: https://rewindex.com/change/icc2f413a6a58ad.md · JSON: https://rewindex.com/api/v1/changes/icc2f413a6a58ad · Generated 2026-10-18T02:55:18.941Z