---
title: Troubleshooting
description: "Diagnose missing or unexpected data, instrumentation problems, and integration issues with Amplitude data sources."
product: data
token_estimate: 316
---
# Troubleshooting

> For AI agents: a documentation index is available at [/docs/llms.txt](/docs/llms.txt). Append `.md` to any page URL for markdown, or send `Accept: text/markdown`.

When your Amplitude data looks incorrect or incomplete, start here. Pages in this section cover common diagnostic questions about ingestion, instrumentation, and source integrations.

### [Missing or unexpected data](https://amplitude.com/docs/data/troubleshooting/missing-data)

Missing events, inflated user counts, and discrepancies with other platforms.

### [Instrumentation and governance](https://amplitude.com/docs/data/troubleshooting/instrumentation-issues)

Hiding, blocking, and deleting events; filtering internal users; historical data changes; UI quirks.

### [Integrations and sources](https://amplitude.com/docs/data/troubleshooting/integrations-and-sources)

Segment, iOS 14, mobile attribution, and third-party site builders.

## More in this section

- [Missing or unexpected data](https://amplitude.com/docs/data/troubleshooting/missing-data).
- [Instrumentation and governance](https://amplitude.com/docs/data/troubleshooting/instrumentation-issues).
- [Integrations and sources](https://amplitude.com/docs/data/troubleshooting/integrations-and-sources).